Citigroup Commercial Mortgage Trust 2017 B1

05/28/2026 | Press release | Distributed by Public on 05/28/2026 09:59

Asset-Backed Issuer Distribution Report (Form 10-D)


Citigroup Commercial Mortgage Trust 2017-B1
Commercial Mortgage Pass-Through Certificates, Series 2017-B1
STATEMENT TO NOTEHOLDERS
May 15, 2026
TRANSACTION PARTIES
Depositor: Citigroup Commercial Mortgage Securities Inc.
Master Servicer: Wells Fargo Bank, National Association
Certificate Administrator: Citibank, N.A.
Special Servicer: LNR Partners, LLC
Trustee / Custodian: Deutsche Bank Trust Company Americas
Asset Representations Reviewer /
BellOak, LLC
Operating Advisor:
Danny Lee Citibank, Agency and Trust
(212) 816-4936 388 Greenwich Street Trading, 4th Floor
[email protected] New York, NY 10013
TABLE OF CONTENTS
1 . Distribution Summary 2
1.1 . Summary 2
1.2 . Factors 3
2 . Distribution Detail 4
2.1 . Interest Detail 4
2.2 . Interest Shortfall Detail 5
2.3 . Principal Detail 6
3 . Reconciliation Detail 7
4 . Other Information 8
5 . Stratification Detail 9
6 . Mortgage Loan Detail 14
7 . NOI Detail 16
8 . Delinquency Loan Detail 18
9 . Collateral Performance Delinquency and Loan Status Detail 19
10 . Appraisal Reduction Detail 20
11 . Historical Appraisal Reduction Detail 21
12 . Loan Modification Detail 25
13 . Historical Loan Modification Detail 26
14 . Specially Serviced Loan Detail 32
15 . Historical Specially Serviced Loan Detail 33
16 . Unscheduled Principal Detail 38
17 . Historical Unscheduled Principal Detail 39
18 . Liquidated Loan Detail 40
19 . Historical Liquidated Loan Detail 41
20 . CREFC Investor Reporting Package Legends 42
21 . Notes 43
Reports Available at sf.citidirect.com v. 21.09.28 Page 1 of 43 © Copyright 2026 Citigroup

Citigroup Commercial Mortgage Trust 2017-B1
Commercial Mortgage Pass-Through Certificates, Series 2017-B1
DISTRIBUTION SUMMARY
May 15, 2026
Accretion
&
Non-Cash
Accrual Other Balance
Original Prior Pass-Through Day Interest (As Interest) Principal Total Realized Loss Increase/ Current
Class Balance Balance Rate Count Distributed Distributed Distributed Distributed /(Recovery) (Decrease) Balance
A-1 21,308,000.00 - 2.008000 % 30/360 - - - - - - -
A-2 52,843,000.00 - 3.053000 % 30/360 - - - - - - -
A-3 245,000,000.00 232,631,749.11 3.197000 % 30/360 619,769.75 18,258.73 4,488,388.84 5,126,417.32 - - 228,143,360.27
A-4 268,110,000.00 268,110,000.00 3.458000 % 30/360 772,603.65 - - 772,603.65 - - 268,110,000.00
A-AB 38,890,000.00 8,560,657.17 3.243000 % 30/360 23,135.18 3,303.47 658,339.14 684,777.79 - - 7,902,318.03
A-S 89,450,000.00 89,450,000.00 3.711000 % 30/360 276,624.12 - - 276,624.12 - - 89,450,000.00
B 38,016,000.00 38,016,000.00 3.963000 % 30/360 125,547.84 - - 125,547.84 - - 38,016,000.00
C 36,899,000.00 36,899,000.00 4.099978 % 30/360 126,070.92 - - 126,070.92 - - 36,899,000.00
D 41,370,000.00 41,370,000.00 3.000000 % 30/360 103,425.00 - - 103,425.00 - - 41,370,000.00
E 21,245,000.00 21,245,000.00 3.300000 % 30/360 58,423.75 - - 58,423.75 - - 21,245,000.00
F 8,945,000.00 8,945,000.00 3.300000 % 30/360 24,598.75 - - 24,598.75 - - 8,945,000.00
G 8,945,000.00 8,945,000.00 3.300000 % 30/360 215,115.58 - - 215,115.58 - - 8,945,000.00
H 23,481,024.00 20,987,913.95 3.300000 % 30/360 9,867.14 - - 9,867.14 - - 20,987,913.95
R - - 0.000000 % 30/360 - - - - - - -
VRR 47,079,054.00 40,797,911.64 0.000000 % 30/360 146,900.93 7,159.81 270,880.42 424,941.16 - - 40,527,031.22
Total 941,581,078.00 815,958,231.87 2,502,082.61 28,722.01 5,417,608.40 7,948,413.02 - - 810,540,623.47
Notional
X-A 715,601,000.00 598,752,406.28 0.708661 % 30/360 353,593.90 114,474.18 - 468,068.08 - (5,146,727.98 ) 593,605,678.30
X-B 38,016,000.00 38,016,000.00 0.136978 % 30/360 4,339.48 - - 4,339.48 - - 38,016,000.00
X-D 41,370,000.00 41,370,000.00 1.099978 % 30/360 37,921.75 - - 37,921.75 - - 41,370,000.00
X-E 21,245,000.00 21,245,000.00 0.799978 % 30/360 14,162.95 - - 14,162.95 - - 21,245,000.00
X-F 17,890,000.00 17,890,000.00 0.799978 % 30/360 11,926.34 - - 11,926.34 - - 17,890,000.00
X-H 23,481,024.00 20,987,913.95 0.799978 % 30/360 13,991.56 - - 13,991.56 - - 20,987,913.95
Total 857,603,024.00 738,261,320.23 435,935.98 114,474.18 - 550,410.16 - (5,146,727.98 ) 733,114,592.25
Grand Total 1,799,184,102 1,554,219,552 2,938,018.59 143,196.19 5,417,608.40 8,498,823.18 - (5,146,727.98 ) 1,543,655,216
Reports Available at sf.citidirect.com v. 21.09.28 Page 2 of 43 © Copyright 2026 Citigroup

Citigroup Commercial Mortgage Trust 2017-B1
Commercial Mortgage Pass-Through Certificates, Series 2017-B1
DISTRIBUTION SUMMARY - FACTORS
May 15, 2026
Accretion
&
Non-Cash
Other Balance
Record Interest (As Interest) Principal Total Realized Loss Increase/ Current
Class CUSIP Date Distributed Distributed Distributed Distributed /(Recovery) (Decrease) Balance
A-1 17326 CAW4 04/30/2026 - - - - - - -
A-2 17326 CAX2 04/30/2026 - - - - - - -
A-3 17326 CAY0 04/30/2026 2.52967245 0.07452543 18.31995445 20.92415233 - - 931.19738886
A-4 17326 CAZ7 04/30/2026 2.88166667 - - 2.88166667 - - 1,000.00000000
A-AB 17326 CBA1 04/30/2026 0.59488763 0.08494394 16.92823708 17.60806866 - - 203.19665801
A-S 17326 CBB9 04/30/2026 3.09249994 - - 3.09249994 - - 1,000.00000000
X-A 17326 CBE3 04/30/2026 0.49412158 0.15996928 - 0.65409087 - - 829.52047063
X-B 17326 CBF0 04/30/2026 0.11414878 - - 0.11414878 - - 1,000.00000000
X-D 17326CAJ3 U1740GAE4 17326CAK0 04/30/2026 0.91664854 - - 0.91664854 - - 1,000.00000000
X-E 17326CAL8 U1740GAF1 17326CAM6 04/30/2026 0.66664862 - - 0.66664862 - - 1,000.00000000
X-F 17326CAN4 U1740GAG9 17326CAP9 04/30/2026 0.66664841 - - 0.66664841 - - 1,000.00000000
X-H 17326CBK9 U1740GAM6 17326CBL7 04/30/2026 0.59586669 - - 0.59586669 - - 893.82447503
B 17326 CBC7 04/30/2026 3.30250000 - - 3.30250000 - - 1,000.00000000
C 17326 CBD5 04/30/2026 3.41664869 - - 3.41664869 - - 1,000.00000000
D 17326CAA2 U1740GAA2 17326CAB0 04/30/2026 2.50000000 - - 2.50000000 - - 1,000.00000000
E 17326CAC8 U1740GAB0 17326CAD6 04/30/2026 2.75000000 - - 2.75000000 - - 1,000.00000000
F 17326CAE4 U1740GAC8 17326CAF1 04/30/2026 2.75000000 - - 2.75000000 - - 1,000.00000000
G 17326CAG9 U1740GAD6 17326CAH7 04/30/2026 24.04869536 - - 24.04869536 - - 1,000.00000000
H 17326CBG8 U1740GAL8 17326CBH6 04/30/2026 0.42021762 - - 0.42021762 - - 893.82447503
R 17326 CAU8 04/30/2026 - - - - - - -
VRR 17326 CAT1 04/30/2026 3.12030335 0.15208058 5.75373541 9.02611934 - - 860.82934504
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Citigroup Commercial Mortgage Trust 2017-B1
Commercial Mortgage Pass-Through Certificates, Series 2017-B1
DISTRIBUTION INFORMATION - INTEREST DETAIL
May 15, 2026
Rate Interest Shortfall Paid
Cap
Accrual Net Accreted Non Carry Cap Carryover Carryover
Class Uncapped Capped Next Dates Accrued /Deferred Recovered Forward /Basis Risk Accrued Carry Forward /Basis Risk Total
A-1 2.00800 % 2.00800 % 2.00800 % 04/01-04/30 - - - - - - - - -
A-2 3.05300 % 3.05300 % 3.05300 % 04/01-04/30 - - - - - - - - -
A-3 3.19700 % 3.19700 % 3.19700 % 04/01-04/30 619,769.75 - - - - 619,769.75 - - 638,028.48
A-4 3.45800 % 3.45800 % 3.45800 % 04/01-04/30 772,603.65 - - - - 772,603.65 - - 772,603.65
A-AB 3.24300 % 3.24300 % 3.24300 % 04/01-04/30 23,135.18 - - - - 23,135.18 - - 26,438.65
A-S 3.71100 % 3.71100 % 3.71100 % 04/01-04/30 276,624.12 - - - - 276,624.12 - - 276,624.12
B 3.96300 % 3.96300 % 3.96300 % 04/01-04/30 125,547.84 - - - - 125,547.84 - - 125,547.84
C 4.31828 % 4.09998 % 4.09998 % 04/01-04/30 126,070.92 - - - - 126,070.92 - - 126,070.92
D 3.00000 % 3.00000 % 3.00000 % 04/01-04/30 103,425.00 - - - - 103,425.00 - - 103,425.00
E 3.30000 % 3.30000 % 3.30000 % 04/01-04/30 58,423.75 - - - - 58,423.75 - - 58,423.75
F 3.30000 % 3.30000 % 3.30000 % 04/01-04/30 24,598.75 - - - - 24,598.75 - - 24,598.75
G 3.30000 % 3.30000 % 3.30000 % 04/01-04/30 24,598.75 - - 522.48 - 24,598.75 190,516.83 - 215,115.58
H 3.30000 % 3.30000 % 3.30000 % 04/01-04/30 57,716.76 - - 54,742.38 - 9,867.14 - - 9,867.14
R 0.00000 % 0.00000 % 0.00000 % 04/01-04/30 - - - - - - - - -
VRR 0.00000 % 0.00000 % 0.00000 % 04/01-04/30 146,900.93 - - - - 146,900.93 - - 154,060.74
Total 2,359,415.40 - - 55,264.86 - 2,311,565.78 190,516.83 - 2,530,804.62
Notional
X-A 1.00278 % 0.70866 % 0.70866 % 04/01-04/30 353,593.90 - - - - 353,593.90 - - 468,068.08
X-B 0.35528 % 0.13698 % 0.13698 % 04/01-04/30 4,339.48 - - - - 4,339.48 - - 4,339.48
X-D 1.31828 % 1.09998 % 1.09998 % 04/01-04/30 37,921.75 - - - - 37,921.75 - - 37,921.75
X-E 1.01828 % 0.79998 % 0.79998 % 04/01-04/30 14,162.95 - - - - 14,162.95 - - 14,162.95
X-F 1.01828 % 0.79998 % 0.79998 % 04/01-04/30 11,926.34 - - - - 11,926.34 - - 11,926.34
X-H 1.01828 % 0.79998 % 0.79998 % 04/01-04/30 13,991.56 - - - - 13,991.56 - - 13,991.56
Total 435,935.98 - - - - 435,935.98 - - 550,410.16
Grand Total 2,795,351.38 - - 55,264.86 - 2,747,501.76 190,516.83 - 3,081,214.78
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Citigroup Commercial Mortgage Trust 2017-B1
Commercial Mortgage Pass-Through Certificates, Series 2017-B1
DISTRIBUTION INFORMATION - INTEREST SHORTFALL DETAIL
May 15, 2026
Cap Carryover /
Non-Recov Shortfall Carry Forward Interest Basis Risk Shortfall
Other
Class PPIS SSRA Shortfall Prior Int. on Prior New Paid Outstanding Prior Int. on Prior New Paid Outstanding
A-1 - - - - - - - - - - - - -
A-2 - - - - - - - - - - - - -
A-3 - - - - - - - - - - - - -
A-4 - - - - - - - - - - - - -
A-AB - - - - - - - - - - - - -
A-S - - - - - - - - - - - - -
B - - - - - - - - - - - - -
C - - - - - - - - - - - - -
D - - - - - - - - - - - - -
E - - - - - - - - - - - - -
F - - - - - - - - - - - - -
G - - - 189,994.35 522.48 - 190,516.83 - - - - - -
H - - - 2,506,458.44 6,892.76 47,849.62 - 2,561,200.82 - - - - -
R - - - - - - - - - - - - -
VRR - - - - - - - - - - - - -
Total - - - 2,696,452.79 7,415.24 47,849.62 190,516.83 2,561,200.82 - - - - -
Notional
X-A - - - - - - - - - - - - -
X-B - - - - - - - - - - - - -
X-D - - - - - - - - - - - - -
X-E - - - - - - - - - - - - -
X-F - - - - - - - - - - - - -
X-H - - - - - - - - - - - - -
Total - - - - - - - - - - - - -
Grand Total - - - 2,696,452.79 7,415.24 47,849.62 190,516.83 2,561,200.82 - - - - -
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Citigroup Commercial Mortgage Trust 2017-B1
Commercial Mortgage Pass-Through Certificates, Series 2017-B1
DISTRIBUTION INFORMATION - PRINCIPAL DETAIL
May 15, 2026
Accretion
&
Non-Cash
Balance Cumulative
Prior Principal Accreted Realized Loss Increase/ Current Realized Class % Class % Sub % Sub %
Class Balance Distributed Principal /(Recovery) (Decrease) Balance Loss Original Current Original Current
A-1 - - - - - - - 2.26 % 0.00 % 30.00 % 34.53 %
A-2 - - - - - - - 5.61 % 0.00 % 30.00 % 34.53 %
A-3 232,631,749.11 4,488,388.84 - - - 228,143,360.27 - 26.02 % 28.15 % 30.00 % 34.53 %
A-4 268,110,000.00 - - - - 268,110,000.00 - 28.47 % 33.08 % 30.00 % 34.53 %
A-AB 8,560,657.17 658,339.14 - - - 7,902,318.03 - 4.13 % 0.97 % 30.00 % 34.53 %
A-S 89,450,000.00 - - - - 89,450,000.00 - 9.50 % 11.04 % 20.00 % 22.91 %
B 38,016,000.00 - - - - 38,016,000.00 - 4.04 % 4.69 % 15.75 % 17.97 %
C 36,899,000.00 - - - - 36,899,000.00 - 3.92 % 4.55 % 11.63 % 13.18 %
D 41,370,000.00 - - - - 41,370,000.00 - 4.39 % 5.10 % 7.00 % 7.81 %
E 21,245,000.00 - - - - 21,245,000.00 - 2.26 % 2.62 % 4.63 % 5.05 %
F 8,945,000.00 - - - - 8,945,000.00 - 0.95 % 1.10 % 3.63 % 3.89 %
G 8,945,000.00 - - - - 8,945,000.00 - 0.95 % 1.10 % 2.62 % 2.73 %
H 20,987,913.95 - - - - 20,987,913.95 2,493,110.05 2.49 % 2.59 % 0.00 % 0.00 %
R - - - - - - - 0.00 % 0.00 % 0.00 % 0.00 %
VRR 40,797,911.64 270,880.42 - - - 40,527,031.22 131,216.31 5.00 % 5.00 % 0.00 % 0.00 %
Total 815,958,231.87 5,417,608.40 - - - 810,540,623.47 2,624,326.36 99.99 % 99.99 %
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Citigroup Commercial Mortgage Trust 2017-B1
Commercial Mortgage Pass-Through Certificates, Series 2017-B1
RECONCILIATION DETAIL
May 15, 2026
SOURCE OF FUNDS ALLOCATION OF FUNDS
Interest Funds Available Scheduled Fees
Scheduled Interest 2,761,906.38 Servicing Fee 4,191.13
Prepayment Interest Shortfall - Trustee/Certificate Administrator Fee 4,487.77
Interest Adjustments - Operating Advisor Fee 734.36
ASER Amount - Asset Representations Reviewer Ongoing Fee 158.11
Realized Loss in Excess of Principal Balance - CREFC Intellectual Property Royalty License Fee 339.98
Total Interest Funds Available 2,761,906.38 Total Scheduled Fees 9,911.35
Principal Funds Available Additional Fees, Expenses, etc.
Scheduled Principal 683,893.17 Additional Servicing Fee -
Curtailments - Special Servicing Fee (189,000.00 )
Unscheduled Principal Collections 4,733,715.23 Work-out Fee 2,976.94
Net Liquidation Proceeds - Liquidation Fee -
Repurchased Principal - Trust Fund Expenses -
Substitution Principal - Trust Advisor Expenses -
Other Principal - Reimbursement of Nonrecoverable Advances To the Servicer -
Reimbursement of Interest on Advances to the Servicer (0.50 )
Total Principal Funds Available 5,417,608.40
Borrower Reimbursable Trust Fund Expenses -
Other Funds Available
Other Expenses -
Yield Maintenance Charges 143,196.19
Withdrawal of Withheld Amounts from the Interest Reserve Total Additional Fees, Expenses, etc. (186,023.56 )
Account -
Distributions
Deposit of Withheld Amounts to the Interest Reserve Account -
Interest Distribution 2,938,018.59
Total Other Funds Available 143,196.19 Principal Distribution 5,417,608.40
Yield Maintenance Charge Distribution 143,196.19
Total Distributions 8,498,823.18
Total Funds Available 8,322,710.97
Total Funds Allocated 8,322,710.97
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Citigroup Commercial Mortgage Trust 2017-B1
Commercial Mortgage Pass-Through Certificates, Series 2017-B1
OTHER INFORMATION
Interest Reserve Account Information
May 15, 2026
Beginning Interest Reserve Account Balance 0.00
Deposit of Withheld Amounts to the Interest Reserve Account 0.00
Withdrawal of Withheld Amounts from the Interest Reserve Account 0.00
Ending Interest Reserve Account Balance 0.00
Excess Liquidation Proceeds Reserve Account Information
Beginning Excess Liquidation Proceeds Reserve Account Balance 0.00
Deposit to the Excess Liquidation Proceeds Reserve Account 0.00
Withdrawal from the Excess Liquidation Proceeds Reserve Account 0.00
Ending Excess Liquidation Proceeds Reserve Account Balance 0.00
ARD Mortgage Loan Information
Excess Interest 0.00
Collateral Information
% of Cut-Off Principal Balance Outstanding 86.082935 %
Controlling Class Information
The Controlling Class is Class H.
The Controlling Class Representative is Investin Pro RED Holdings, LLC
There Are No Disclosable Special Servicer Fees.
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Citigroup Commercial Mortgage Trust 2017-B1
Commercial Mortgage Pass-Through Certificates, Series 2017-B1
STRATIFICATION DETAIL
May 15, 2026
Anticipated Remaining Term
Anticipated Remaining Asset Ending Scheduled % of Wtd Avg
Term Range Count Balance Agg.Bal. WAC WAM DSCR
60 Months or Less 47 810,540,623.50 100.00 4.1133 14 2.125638
61 to 90 Months 0 0.00 0.00 0.0000 0 0.000000
91 Months or Greater 0 0.00 0.00 0.0000 0 0.000000
Total 47 810,540,623.50 100.00 4.1133 14 2.125638
Debt Service Coverage Ratio
Debt Service Coverage Asset Ending Scheduled % of Wtd Avg
Ratio Range Count Balance Agg.Bal. WAC WAM DSCR
1.250 or Less 8 155,852,288.25 19.23 3.8199 14 0.367496
1.251 to 1.500 5 85,330,388.64 10.53 4.6815 14 1.389918
1.501 to 1.750 6 59,678,686.08 7.36 4.4638 10 1.694240
1.751 to 2.000 4 83,332,229.49 10.28 4.3625 14 1.855196
2.001 to 2.250 6 90,742,465.49 11.20 4.0508 14 2.068828
2.251 to 2.500 6 90,167,489.15 11.12 4.0116 14 2.352567
2.501 to 2.750 2 38,619,188.05 4.76 4.6116 14 2.513136
2.751 to 3.000 1 6,525,000.00 0.81 4.4050 15 2.920000
3.001 to 3.250 4 58,105,888.35 7.17 4.2251 14 3.080297
3.251 to 3.500 1 7,730,000.00 0.95 4.4050 15 3.384900
3.501 to 3.750 1 40,000,000.00 4.93 3.9400 14 3.730200
3.751 to 4.000 1 21,500,000.00 2.65 3.8000 14 3.889700
4.001 or Greater 2 72,957,000.00 9.00 3.4852 14 4.624392
Total 47 810,540,623.50 100.00 4.1133 14 2.125638
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Citigroup Commercial Mortgage Trust 2017-B1
Commercial Mortgage Pass-Through Certificates, Series 2017-B1
STRATIFICATION DETAIL
May 15, 2026
Ending Schedule Balance
Ending Schedule Balance Asset Ending Scheduled % of Wtd Avg
Range Count Balance Agg.Bal. WAC WAM DSCR
1 to 5,000,000 6 21,814,953.50 2.69 4.6741 14 1.696790
10,000,001 to 15,000,000 4 52,064,252.31 6.42 4.1639 13 1.406762
15,000,001 to 20,000,000 2 30,700,000.00 3.79 3.3795 14 -0.660290
20,000,001 to 25,000,000 9 200,326,729.05 24.72 4.0636 13 2.682687
25,000,001 to 30,000,000 2 59,280,049.32 7.31 4.5428 15 2.204595
30,000,001 to 35,000,000 0 0.00 0.00 0.0000 0 0.000000
35,000,001 to 40,000,000 2 77,500,000.00 9.56 3.6932 14 1.925265
40,000,001 to 45,000,000 1 41,700,000.00 5.14 4.3200 15 1.803600
45,000,001 to 50,000,000 1 45,827,317.07 5.65 4.6300 15 1.408900
5,000,001 to 10,000,000 16 119,613,456.08 14.76 4.5132 14 2.068226
50,000,001 to 55,000,000 2 102,713,866.17 12.67 3.7710 14 3.007014
55,000,001 to 60,000,000 1 59,000,000.00 7.28 3.7700 15 2.027000
60,000,001 to 65,000,000 0 0.00 0.00 0.0000 0 0.000000
65,000,001 to 70,000,000 0 0.00 0.00 0.0000 0 0.000000
70,000,001 to 75,000,000 0 0.00 0.00 0.0000 0 0.000000
75,000,001 to 80,000,000 0 0.00 0.00 0.0000 0 0.000000
80,000,001 to 85,000,000 0 0.00 0.00 0.0000 0 0.000000
85,000,000+ 0 0.00 0.00 0.0000 0 0.000000
Total 47 810,540,623.50 100.00 4.1133 14 2.125638
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Citigroup Commercial Mortgage Trust 2017-B1
Commercial Mortgage Pass-Through Certificates, Series 2017-B1
STRATIFICATION DETAIL
May 15, 2026
Loan Rate
Asset Ending Scheduled % of Wtd Avg
Loan Rate Range Count Balance Agg.Bal. WAC WAM DSCR
4.00 or Less 11 312,157,000.00 38.51 3.6095 14 2.409844
4.01 to 4.25 7 142,228,825.61 17.55 4.1443 12 1.886045
4.26 to 4.50 13 169,005,433.54 20.85 4.3693 14 2.294025
4.51 to 4.75 9 145,922,444.43 18.00 4.6456 14 1.793347
4.76 to 5.00 6 37,293,443.36 4.60 4.8643 13 1.271821
5.01 to 5.25 1 3,933,476.56 0.49 5.1100 14 1.422000
5.26 to 5.50 0 0.00 0.00 0.0000 0 0.000000
5.51 to 5.75 0 0.00 0.00 0.0000 0 0.000000
5.76 to 6.00 0 0.00 0.00 0.0000 0 0.000000
6.01 to 6.25 0 0.00 0.00 0.0000 0 0.000000
6.26 to 6.50 0 0.00 0.00 0.0000 0 0.000000
6.51 to 6.75 0 0.00 0.00 0.0000 0 0.000000
6.76 to 7.00 0 0.00 0.00 0.0000 0 0.000000
7.01 or Greater 0 0.00 0.00 0.0000 0 0.000000
Total 47 810,540,623.50 100.00 4.1133 14 2.125638
Property Type
Asset Ending Scheduled % of Wtd Avg
Property Type Range Count Balance Agg.Bal. WAC WAM DSCR
Industrial 0 0.00 0.00 0.0000 0 0.000000
Lodging 4 104,592,772.80 12.90 4.6233 15 2.073672
Mixed Use 7 161,639,138.73 19.94 3.7880 14 3.409489
Multifamily 3 71,232,710.57 8.79 4.2860 14 2.022819
Office 8 115,819,469.49 14.29 4.2405 14 0.938951
Other 4 78,200,000.00 9.65 3.4958 14 0.312234
Retail 11 182,932,183.20 22.57 4.1372 13 2.131619
Self Storage 9 90,374,097.86 11.15 4.2407 14 3.042648
Total 47 810,540,623.50 100.00 4.1133 14 2.125638
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Citigroup Commercial Mortgage Trust 2017-B1
Commercial Mortgage Pass-Through Certificates, Series 2017-B1
STRATIFICATION DETAIL
May 15, 2026
Remaining Amortization Term
Remaining Amortization Asset Ending Scheduled % of Wtd Avg
Term Range Count Balance Agg.Bal. WAC WAM DSCR
240 Months or Less 24 557,348,067.07 68.76 3.9342 14 2.255880
241 to 270 Months 23 253,192,556.43 31.24 4.5076 14 1.838938
271 to 300 Months 0 0.00 0.00 0.0000 0 0.000000
301 Months or Greater 0 0.00 0.00 0.0000 0 0.000000
Total 47 810,540,623.50 100.00 4.1133 14 2.125638
Seasoning
Asset Ending Scheduled % of Wtd Avg
Seasoning Range Count Balance Agg.Bal. WAC WAM DSCR
12 Months or Less 0 0.00 0.00 0.0000 0 0.000000
13 to 24 Months 0 0.00 0.00 0.0000 0 0.000000
25 to 36 Months 0 0.00 0.00 0.0000 0 0.000000
37 to 48 Months 0 0.00 0.00 0.0000 0 0.000000
49 Months or Greater 47 810,540,623.50 100.00 4.1133 14 2.125638
Total 47 810,540,623.50 100.00 4.1133 14 2.125638
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Citigroup Commercial Mortgage Trust 2017-B1
Commercial Mortgage Pass-Through Certificates, Series 2017-B1
STRATIFICATION DETAIL
May 15, 2026
State
Asset Ending Scheduled % of Wtd Avg
State Range Count Balance Agg.Bal. WAC WAM DSCR
Alabama 0 0.00 0.00 0.0000 0 0.000000
Arizona 0 0.00 0.00 0.0000 0 0.000000
California 3 74,280,586.23 9.16 4.3740 14 2.224414
Florida 4 31,605,000.00 3.90 4.2439 14 2.877800
Georgia 0 0.00 0.00 0.0000 0 0.000000
Illinois 3 15,838,701.25 1.95 4.8542 14 1.004699
Indiana 1 4,599,691.74 0.57 4.7900 14 1.231500
Kansas 1 12,874,390.56 1.59 4.8500 11 1.408000
Kentucky 0 0.00 0.00 0.0000 0 0.000000
Maryland 0 0.00 0.00 0.0000 0 0.000000
Michigan 1 21,094,673.39 2.60 4.5900 15 1.339600
N/A 3 67,700,000.00 8.35 3.4300 14 0.000000
Nevada 1 9,339,138.73 1.15 4.2591 14 2.551500
New Jersey 0 0.00 0.00 0.0000 0 0.000000
New York 11 228,578,933.13 28.20 3.9263 14 2.587796
North Carolina 0 0.00 0.00 0.0000 0 0.000000
Ohio 1 7,010,210.57 0.86 4.4890 14 2.393900
Pennsylvania 1 23,000,000.00 2.84 4.0510 14 3.024400
Texas 5 53,746,124.84 6.63 4.3789 14 1.938882
Various 0 0.00 0.00 0.0000 0 0.000000
Total 47 810,540,623.50 100.00 4.1133 14 2.125638
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Citigroup Commercial Mortgage Trust 2017-B1
Commercial Mortgage Pass-Through Certificates, Series 2017-B1
MORTGAGE LOAN DETAIL
May 15, 2026
Prop Paid Beginning Ending Payment Workout Mod
Type Through Gross Interest Principal Scheduled Scheduled Maturity Status Strategy Code
Loan ID OMCR (1) City State Date Coupon Payment Payment Balance Balance Date (2 ) (3 ) (4 )
304101882 1 MU New York NY 05/09/2026 3.43000 % 71,458.33 - 25,000,000.00 25,000,000.00 06/09/2027 0 0 0
304101843 10 RT New York NY 05/06/2026 4.36600 % 109,150.00 - 30,000,000.00 30,000,000.00 08/06/2027 0 0 0
1749262 11 OF Troy MI 05/01/2026 4.59000 % 80,869.89 47,781.90 21,142,455.29 21,094,673.39 08/01/2027 0 0 0
1647690 12 RT Various XX 05/01/2026 4.19000 % 85,672.41 - 24,536,250.00 24,536,250.00 11/01/2026 0 0 0
1749833 13 LO Lafayette LA 05/01/2026 4.42000 % 74,635.90 46,834.31 20,263,139.97 20,216,305.66 08/01/2027 0 0 8
300801642 14 MU Lahaska PA 05/01/2026 4.05100 % 77,644.17 - 23,000,000.00 23,000,000.00 07/01/2027 0 0 0
1749778 15 MF Dallas TX 05/01/2026 4.16000 % 78,078.00 - 22,522,500.00 22,522,500.00 07/01/2027 0 0 0
304101831 16 MU Corona NY 05/06/2026 4.36000 % 79,933.33 - 22,000,000.00 22,000,000.00 07/06/2027 0 0 0
300801633 17 MU New Rochelle NY 05/01/2026 3.80000 % 68,083.33 - 21,500,000.00 21,500,000.00 07/01/2027 0 0 0
308511018 18 RT Torrance CA 05/01/2026 3.65750 % 62,351.23 - 20,457,000.00 20,457,000.00 06/01/2027 0 0 0
304101851 19 OF New York NY 05/06/2026 3.33000 % 43,012.50 - 15,500,000.00 15,500,000.00 08/06/2027 0 0 0
304101891 1 A N/A 05/09/2026 3.43000 % 42,875.00 - 15,000,000.00 15,000,000.00 06/09/2027 0 0 0
453011619 1 B N/A 05/09/2026 3.43000 % 43,446.67 - 15,200,000.00 15,200,000.00 06/09/2027 0 0 0
453011576 1 C N/A 05/09/2026 3.43000 % 107,187.50 - 37,500,000.00 37,500,000.00 06/09/2027 0 0 0
1749343 2 RT Metairie LA 05/01/2026 3.77000 % 185,358.33 - 59,000,000.00 59,000,000.00 08/01/2027 0 0 0
300801632 20 OF Wichita KS 05/01/2026 4.85000 % 52,148.47 28,324.53 12,902,715.09 12,874,390.56 04/01/2027 0 0 0
304101858 21 SS Various XX 05/06/2026 4.51000 % 51,547.12 25,559.39 13,715,421.14 13,689,861.75 08/06/2027 0 0 0
1749084 22 RT Plano TX 05/01/2026 4.64000 % 28,988.89 43,116.38 7,497,126.75 7,454,010.37 08/01/2027 0 0 0
1648607 24 LO El Paso TX 05/01/2026 4.71500 % 36,500.97 20,648.41 9,289,749.16 9,269,100.75 08/01/2027 0 8 8
1749362 25 OF Houston TX 05/01/2026 4.25000 % 32,193.34 21,600.29 9,089,884.52 9,068,284.23 07/01/2027 0 0 0
304101839 26 N/A Maitland FL 05/06/2026 3.92000 % 34,300.00 - 10,500,000.00 10,500,000.00 07/06/2027 0 0 0
1647637 27 OF Rochester NY 05/01/2026 4.28000 % 17,024.44 4,773,206.40 4,773,206.40 - 08/01/2027 0 11 0
203041833 29 MU Reno NV 05/06/2026 4.25906 % 33,203.57 16,043.47 9,355,182.20 9,339,138.73 07/06/2027 0 0 0
1749761 3 OF Milwaukee WI 05/01/2026 4.14000 % 173,581.20 99,524.71 50,313,390.88 50,213,866.17 07/01/2027 0 0 0
304101859 30 RT Chicago IL 01/06/2020 4.91000 % - - 8,770,446.11 8,770,446.11 08/06/2027 3 2 0
304101862 31 RT Ka'anapali HI 05/06/2026 4.08000 % 27,388.96 15,994.54 8,055,577.23 8,039,582.69 08/06/2027 0 0 0
308511032 32 RT Hercules CA 05/06/2026 4.74000 % 31,635.24 12,653.56 8,008,922.72 7,996,269.16 08/06/2027 0 0 0
1749956 33 MU Brooklyn NY 05/01/2026 4.40000 % 30,433.33 - 8,300,000.00 8,300,000.00 04/01/2027 0 0 0
300801641 34 MF Marysville OH 05/01/2026 4.48900 % 26,273.40 13,197.09 7,023,407.66 7,010,210.57 07/01/2027 0 0 0
300801651 35 SS Miami Gardens FL 05/01/2026 4.40500 % 28,375.54 - 7,730,000.00 7,730,000.00 08/01/2027 0 0 0
300801648 36 SS Hialeah FL 05/01/2026 4.40500 % 25,145.21 - 6,850,000.00 6,850,000.00 08/01/2027 0 0 0
300801649 37 SS Hialeah FL 05/01/2026 4.40500 % 23,952.19 - 6,525,000.00 6,525,000.00 08/01/2027 0 0 0
Reports Available at sf.citidirect.com v. 21.09.28 Page 14 of 43 © Copyright 2026 Citigroup

Citigroup Commercial Mortgage Trust 2017-B1
Commercial Mortgage Pass-Through Certificates, Series 2017-B1
MORTGAGE LOAN DETAIL
May 15, 2026
Prop Paid Beginning Ending Payment Workout Mod
Type Through Gross Interest Principal Scheduled Scheduled Maturity Status Strategy Code
Loan ID OMCR (1) City State Date Coupon Payment Payment Balance Balance Date (2 ) (3 ) (4 )
1749521 38 RT Saugerties NY 05/01/2026 4.73000 % 23,209.52 9,318.14 5,888,251.27 5,878,933.13 08/01/2027 0 0 0
304101856 39 RT Brooklyn NY 05/06/2026 4.45000 % 22,991.67 - 6,200,000.00 6,200,000.00 08/06/2027 0 0 0
304101861 4 LO San Diego CA 05/06/2026 4.63000 % 177,281.65 120,411.96 45,947,729.03 45,827,317.07 08/06/2027 0 8 8
300801659 40 MH Brookings OR 05/01/2026 4.92000 % 23,612.26 8,836.26 5,759,087.11 5,750,250.85 08/01/2027 0 0 0
304101838 41 SS Balch Springs TX 05/06/2026 4.57000 % 20,726.22 10,103.76 5,442,333.25 5,432,229.49 07/06/2027 0 0 0
300801640 42 SS Castle Rock CO 05/01/2026 4.23500 % 17,146.28 10,107.67 4,858,450.19 4,848,342.52 07/01/2027 0 0 0
1749567 43 RT Goshen IN 05/01/2026 4.79000 % 18,395.78 8,855.40 4,608,547.14 4,599,691.74 07/01/2027 0 0 0
1749823 45 OF Barrington IL 05/01/2026 5.11000 % 16,785.63 8,354.22 3,941,830.78 3,933,476.56 07/01/2027 0 0 0
300801653 46 SS Shreveport LA 05/01/2026 4.77300 % 14,737.56 7,099.13 3,705,232.17 3,698,133.04 08/01/2027 0 0 0
300801652 47 OF Skokie IL 05/01/2026 4.37700 % 11,457.34 6,371.36 3,141,149.94 3,134,778.58 08/01/2027 0 0 0
300801650 48 SS Baton Rouge LA 05/01/2026 4.95300 % 6,618.54 2,992.61 1,603,523.67 1,600,531.06 08/01/2027 0 0 0
300801657 5 MU Bronx NY 05/01/2026 3.41800 % 149,537.50 - 52,500,000.00 52,500,000.00 08/01/2027 0 0 0
304101849 7 MF New York NY 05/06/2026 4.32000 % 150,120.00 - 41,700,000.00 41,700,000.00 08/06/2027 0 0 0
308511008 8 SS Various XX 05/06/2026 3.94000 % 131,333.33 - 40,000,000.00 40,000,000.00 07/06/2027 0 0 0
300801656 9 LO Various XX 05/01/2026 4.72400 % 115,504.64 60,672.91 29,340,722.23 29,280,049.32 08/01/2027 0 0 0
Total Count = 47 2,761,906.38 5,417,608.40 815,958,231.90 810,540,623.50
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Citigroup Commercial Mortgage Trust 2017-B1
Commercial Mortgage Pass-Through Certificates, Series 2017-B1
NOI DETAIL
May 15, 2026
Property Ending Preceding Most Most Recent Most Recent
Type Scheduled Fiscal Recent Financial As of Financial Asof
Loan ID OMCR (1) City State Balance Year NOI NOI Start Date End Date
304101882 1 MU New York NY 25,000,000.00 196,065,501.36 143,816,580.71 Not Available Not Available
304101843 10 RT New York NY 30,000,000.00 2,630,482.76 1,945,363.71 01/01/2025 09/30/2025
1749262 11 OF Troy MI 21,094,673.39 2,467,255.82 1,962,041.19 Not Available Not Available
1647690 12 RT Various XX 24,536,250.00 2,217,032.35 1,666,354.93 Not Available Not Available
1749833 13 LO Lafayette LA 20,216,305.66 4,791,500.40 5,116,295.58 Not Available Not Available
300801642 14 MU Lahaska PA 23,000,000.00 2,713,934.85 1,512,500.63 Not Available Not Available
1749778 15 MF Dallas TX 22,522,500.00 2,477,603.63 571,367.01 01/01/2026 03/31/2026
304101831 16 MU Corona NY 22,000,000.00 2,144,289.13 1,808,227.29 Not Available Not Available
300801633 17 MU New Rochelle NY 21,500,000.00 3,471,391.28 2,671,006.57 Not Available Not Available
308511018 18 RT Torrance CA 20,457,000.00 59,746,222.00 44,992,864.00 01/01/2025 09/30/2025
304101851 19 OF New York NY 15,500,000.00 646,698.51 (119,489.48 ) Not Available Not Available
304101891 1 A N/A 15,000,000.00 - - Not Available Not Available
453011619 1 B N/A 15,200,000.00 - - Not Available Not Available
453011576 1 C N/A 37,500,000.00 - - Not Available Not Available
1749343 2 RT Metairie LA 59,000,000.00 17,197,853.81 11,283,383.00 01/01/2025 09/30/2025
300801632 20 OF Wichita KS 12,874,390.56 1,230,397.39 1,088,531.98 Not Available Not Available
304101858 21 SS Various XX 13,689,861.75 2,086,269.09 1,571,271.71 Not Available Not Available
1749084 22 RT Plano TX 7,454,010.37 1,272,584.00 966,211.00 Not Available Not Available
1648607 24 LO El Paso TX 9,269,100.75 1,562,725.43 1,491,931.17 04/01/2025 03/31/2026
1749362 25 OF Houston TX 9,068,284.23 948,588.95 773,888.91 Not Available Not Available
304101839 26 N/A Maitland FL 10,500,000.00 974,545.00 728,496.00 Not Available Not Available
203041833 29 MU Reno NV 9,339,138.73 13,059,526.13 6,497,910.69 Not Available Not Available
1749761 3 OF Milwaukee WI 50,213,866.17 8,419,149.61 6,348,293.67 Not Available Not Available
304101859 30 RT Chicago IL 8,770,446.11 134,272.00 182,950.00 01/01/2025 09/30/2025
304101862 31 RT Ka'anapali HI 8,039,582.69 1,079,315.57 866,006.35 01/01/2025 06/30/2025
308511032 32 RT Hercules CA 7,996,269.16 917,378.00 691,702.33 Not Available Not Available
1749956 33 MU Brooklyn NY 8,300,000.00 571,362.05 446,253.29 Not Available Not Available
300801641 34 MF Marysville OH 7,010,210.57 1,145,624.06 875,290.40 Not Available Not Available
300801651 35 SS Miami Gardens FL 7,730,000.00 1,196,014.70 291,700.72 01/01/2026 03/31/2026
300801648 36 SS Hialeah FL 6,850,000.00 1,014,791.11 237,334.37 01/01/2026 03/31/2026
300801649 37 SS Hialeah FL 6,525,000.00 863,144.35 211,818.55 01/01/2026 03/31/2026
1749521 38 RT Saugerties NY 5,878,933.13 720,818.42 531,853.00 Not Available Not Available
Reports Available at sf.citidirect.com v. 21.09.28 Page 16 of 43 © Copyright 2026 Citigroup

Citigroup Commercial Mortgage Trust 2017-B1
Commercial Mortgage Pass-Through Certificates, Series 2017-B1
NOI DETAIL
May 15, 2026
Property Ending Preceding Most Most Recent Most Recent
Type Scheduled Fiscal Recent Financial As of Financial Asof
Loan ID OMCR (1) City State Balance Year NOI NOI Start Date End Date
304101856 39 RT Brooklyn NY 6,200,000.00 513,664.01 386,997.25 01/01/2025 09/30/2025
304101861 4 LO San Diego CA 45,827,317.07 4,667,003.15 5,779,318.63 Not Available Not Available
300801659 40 MH Brookings OR 5,750,250.85 792,245.45 654,255.59 Not Available Not Available
304101838 41 SS Balch Springs TX 5,432,229.49 688,898.78 542,533.41 Not Available Not Available
300801640 42 SS Castle Rock CO 4,848,342.52 697,896.91 332,335.03 01/01/2024 06/30/2024
1749567 43 RT Goshen IN 4,599,691.74 437,560.00 109,065.97 01/01/2026 03/31/2026
1749823 45 OF Barrington IL 3,933,476.56 459,232.01 359,807.22 Not Available Not Available
300801653 46 SS Shreveport LA 3,698,133.04 466,900.54 226,954.97 Not Available Not Available
300801652 47 OF Skokie IL 3,134,778.58 611,975.54 147,692.74 01/01/2026 03/31/2026
300801650 48 SS Baton Rouge LA 1,600,531.06 151,113.47 78,499.57 Not Available Not Available
300801657 5 MU Bronx NY 52,500,000.00 7,293,705.89 6,826,393.36 01/01/2025 09/30/2025
304101849 7 MF New York NY 41,700,000.00 3,266,504.36 2,487,643.27 01/01/2025 09/30/2025
308511008 8 SS Various XX 40,000,000.00 12,038,684.58 9,049,149.92 01/01/2025 09/30/2025
300801656 9 LO Various XX 29,280,049.32 5,798,427.96 5,906,299.46 04/01/2025 03/31/2026
Total Count = 46 810,540,623.50 371,650,084.41 273,914,885.67
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Citigroup Commercial Mortgage Trust 2017-B1
Commercial Mortgage Pass-Through Certificates, Series 2017-B1
DELINQUENCY LOAN DETAIL
May 15, 2026
Actual Paid Current P&I Total P&I Cumulative Other Expense Payment Workout Most Recent
Principal Through Advances Advances Accrued Unpaid Advances Status Strategy Special Serv Foreclosure Bankruptcy REO
Loan ID OMCR Balance Date (Net of ASER) Outstanding Interest Advances Outstanding (2 ) (3 ) Transfer Date Date Date Date
304101859 30 9,401,987.23 01/06/2020 - - 213,585.58 98,934.77 3 2 01/21/2020
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Citigroup Commercial Mortgage Trust 2017-B1
Commercial Mortgage Pass-Through Certificates, Series 2017-B1
COLLATERAL PERFORMANCE - DELINQUENCY AND LOAN STATUS DETAIL
–
May 15, 2026
Delinquent
(Does not include loans in Bankruptcy, Foreclosure, or REO)
30 Day 60 Day 90 Day 120 + Day Bankruptcy Foreclosure REO
Distribution
Date Count Balance Count Balance Count Balance Count Balance Count Balance Count Balance Count Balance
0 0 0 0 0 0 1 8,770,446 0 0 0 0 0 0
05/15/2026
0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 2.2 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 %
0 0 0 0 0 0 1 8,770,446 0 0 0 0 0 0
04/17/2026
0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 2.1 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 %
0 0 0 0 0 0 1 8,770,446 0 0 0 0 0 0
03/17/2026
0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 2.1 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 %
0 0 0 0 0 0 1 8,770,446 0 0 0 0 0 0
02/18/2026
0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 2.1 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 %
0 0 0 0 0 0 1 8,770,446 0 0 0 0 0 0
01/16/2026
0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 2.1 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 %
0 0 0 0 0 0 1 8,770,446 0 0 0 0 0 0
12/17/2025
0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 2.1 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 %
0 0 0 0 0 0 1 8,770,446 0 0 0 0 0 0
11/18/2025
0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 2.1 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 %
0 0 0 0 0 0 1 8,770,446 0 0 0 0 0 0
10/20/2025
0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 2.1 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 %
0 0 0 0 0 0 1 8,770,446 0 0 0 0 0 0
09/17/2025
0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 2.1 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 %
0 0 0 0 0 0 1 8,770,446 0 0 0 0 0 0
08/15/2025
0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 2.1 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 %
0 0 0 0 0 0 1 8,770,446 0 0 0 0 0 0
07/17/2025
0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 2.1 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 %
0 0 0 0 0 0 1 8,770,446 0 0 0 0 0 0
06/17/2025
0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 2.1 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 %
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Citigroup Commercial Mortgage Trust 2017-B1
Commercial Mortgage Pass-Through Certificates, Series 2017-B1
APPRAISAL REDUCTION DETAIL
May 15, 2026
Beginning Ending Appraisal Appraisal Most Recent Cumulative
Loan ID OMCR Property Name Scheduled Balance Scheduled Balance Reduction Amount Reduction Date ASER Amount ASER Amount
1647637 27 Clinton Crossings Medical Office 4,773,206.40 - - 09/11/2025 - -
304101859 30 4901 West Irving Park 8,770,446.11 8,770,446.11 7,876,491.98 04/13/2026 - 571,999.49
Total Count = 2 13,543,652.51 8,770,446.11 7,876,491.98 - 571,999.49
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Citigroup Commercial Mortgage Trust 2017-B1
Commercial Mortgage Pass-Through Certificates, Series 2017-B1
HISTORICAL APPRAISAL REDUCTION DETAIL
May 15, 2026
Distribution Beginning Ending Appraisal Appraisal Most Recent Cumulative
Date Loan ID OMCR Property Name Scheduled Balance Scheduled Balance Reduction Amount Reduction Date ASER Amount ASER Amount
5/15/2026 1647637 27 Clinton Crossings Medical Office 4,773,206.40 - - 09/11/2025 - -
5/15/2026 304101859 30 4901 West Irving Park 8,770,446.11 8,770,446.11 7,876,491.98 04/13/2026 - 571,999.49
4/17/2026 1647637 27 Clinton Crossings Medical Office 5,432,179.86 4,773,206.40 - 09/11/2025 - -
4/17/2026 304101859 30 4901 West Irving Park 8,770,446.11 8,770,446.11 7,876,491.98 04/13/2026 - 571,999.49
3/17/2026 1647637 27 Clinton Crossings Medical Office 5,470,484.83 5,432,179.86 - 09/11/2025 - -
3/17/2026 304101859 30 4901 West Irving Park 8,770,446.11 8,770,446.11 7,228,068.59 02/11/2025 - 571,999.49
2/18/2026 1647637 27 Clinton Crossings Medical Office 5,506,705.17 5,470,484.83 - 09/11/2025 - -
2/18/2026 304101859 30 4901 West Irving Park 8,770,446.11 8,770,446.11 7,228,068.59 02/11/2025 - 571,999.49
1/16/2026 1647637 27 Clinton Crossings Medical Office 5,542,792.51 5,506,705.17 - 09/11/2025 - -
1/16/2026 304101859 30 4901 West Irving Park 8,770,446.11 8,770,446.11 7,228,068.59 02/11/2025 - 571,999.49
12/17/2025 1647637 27 Clinton Crossings Medical Office 5,579,408.23 5,542,792.51 - 09/11/2025 - -
12/17/2025 304101859 30 4901 West Irving Park 8,770,446.11 8,770,446.11 7,228,068.59 02/11/2025 - 571,999.49
11/18/2025 1647637 27 Clinton Crossings Medical Office 5,615,228.60 5,579,408.23 - 09/11/2025 - -
11/18/2025 304101859 30 4901 West Irving Park 8,770,446.11 8,770,446.11 7,228,068.59 02/11/2025 - 571,999.49
10/20/2025 1647637 27 Clinton Crossings Medical Office 5,651,586.88 5,615,228.60 - 11/12/2024 - -
10/20/2025 304101859 30 4901 West Irving Park 8,770,446.11 8,770,446.11 7,228,068.59 02/11/2025 - 571,999.49
9/17/2025 1647637 27 Clinton Crossings Medical Office 5,687,142.21 5,651,586.88 - 11/12/2024 - -
9/17/2025 304101859 30 4901 West Irving Park 8,770,446.11 8,770,446.11 7,228,068.59 02/11/2025 - 571,999.49
8/15/2025 1647637 27 Clinton Crossings Medical Office 5,722,566.98 5,687,142.21 - 11/12/2024 - -
8/15/2025 304101859 30 4901 West Irving Park 8,770,446.11 8,770,446.11 7,228,068.59 02/11/2025 - 571,999.49
7/17/2025 1647637 27 Clinton Crossings Medical Office 5,758,543.78 5,722,566.98 - 11/12/2024 - -
7/17/2025 304101859 30 4901 West Irving Park 8,770,446.11 8,770,446.11 7,228,068.59 02/11/2025 - 571,999.49
6/17/2025 1647637 27 Clinton Crossings Medical Office 8,316,178.80 5,758,543.78 - 11/12/2024 - -
6/17/2025 304101859 30 4901 West Irving Park 8,770,446.11 8,770,446.11 7,228,068.59 02/11/2025 - 571,999.49
5/16/2025 1647637 27 Clinton Crossings Medical Office 8,342,937.93 8,316,178.80 - 11/12/2024 - -
5/16/2025 304101859 30 4901 West Irving Park 8,770,446.11 8,770,446.11 7,228,068.59 02/11/2025 - 571,999.49
4/17/2025 1647637 27 Clinton Crossings Medical Office 8,368,610.56 8,342,937.93 - 11/12/2024 - -
4/17/2025 304101859 30 4901 West Irving Park 8,770,446.11 8,770,446.11 7,228,068.59 02/11/2025 - 571,999.49
3/17/2025 1647637 27 Clinton Crossings Medical Office 8,397,172.91 8,368,610.56 - 11/12/2024 - -
3/17/2025 304101859 30 4901 West Irving Park 8,770,446.11 8,770,446.11 7,228,068.59 02/11/2025 - 571,999.49
2/18/2025 1647637 27 Clinton Crossings Medical Office 8,422,646.39 8,397,172.91 - 11/12/2024 - -
2/18/2025 304101859 30 4901 West Irving Park 8,770,446.11 8,770,446.11 7,228,068.59 02/11/2025 - 571,999.49
1/17/2025 304101859 30 4901 West Irving Park 8,770,446.11 8,770,446.11 6,077,655.10 02/12/2024 - 571,999.49
Reports Available at sf.citidirect.com v. 21.09.28 Page 21 of 43 © Copyright 2026 Citigroup

Citigroup Commercial Mortgage Trust 2017-B1
Commercial Mortgage Pass-Through Certificates, Series 2017-B1
HISTORICAL APPRAISAL REDUCTION DETAIL
May 15, 2026
Distribution Beginning Ending Appraisal Appraisal Most Recent Cumulative
Date Loan ID OMCR Property Name Scheduled Balance Scheduled Balance Reduction Amount Reduction Date ASER Amount ASER Amount
12/17/2024 304101859 30 4901 West Irving Park 8,770,446.11 8,770,446.11 6,077,655.10 02/12/2024 - 571,999.49
11/18/2024 304101859 30 4901 West Irving Park 8,770,446.11 8,770,446.11 6,077,655.10 02/12/2024 - 571,999.49
10/18/2024 304101859 30 4901 West Irving Park 8,770,446.11 8,770,446.11 6,077,655.10 02/12/2024 - 571,999.49
9/17/2024 304101859 30 4901 West Irving Park 8,770,446.11 8,770,446.11 6,077,655.10 02/12/2024 - 571,999.49
8/16/2024 304101859 30 4901 West Irving Park 8,770,446.11 8,770,446.11 6,077,655.10 02/12/2024 - 571,999.49
7/17/2024 304101859 30 4901 West Irving Park 8,770,446.11 8,770,446.11 6,077,655.10 02/12/2024 - 571,999.49
6/17/2024 304101859 30 4901 West Irving Park 8,770,446.11 8,770,446.11 6,077,655.10 02/12/2024 - 571,999.49
5/17/2024 1647637 27 Clinton Crossings Medical Office 8,651,745.34 8,626,087.62 - 12/11/2023 - -
5/17/2024 304101859 30 4901 West Irving Park 8,770,446.11 8,770,446.11 6,077,655.10 02/12/2024 - 571,999.49
4/17/2024 1647637 27 Clinton Crossings Medical Office 8,676,284.02 8,651,745.34 - 12/11/2023 - -
4/17/2024 304101859 30 4901 West Irving Park 8,770,446.11 8,770,446.11 6,077,655.10 02/12/2024 - 571,999.49
3/15/2024 304101859 30 4901 West Irving Park 8,770,446.11 8,770,446.11 6,077,655.10 02/12/2024 - 571,999.49
2/16/2024 304101859 30 4901 West Irving Park 8,770,446.11 8,770,446.11 6,077,655.10 02/12/2024 - 571,999.49
1/18/2024 304101859 30 4901 West Irving Park 8,770,446.11 8,770,446.11 4,876,065.98 02/13/2023 - 571,999.49
12/15/2023 304101859 30 4901 West Irving Park 8,770,446.11 8,770,446.11 4,876,065.98 02/13/2023 - 571,999.49
11/17/2023 304101859 30 4901 West Irving Park 8,770,446.11 8,770,446.11 4,876,065.98 02/13/2023 - 571,999.49
10/17/2023 304101859 30 4901 West Irving Park 8,786,300.63 8,770,446.11 4,876,065.98 02/13/2023 19,930.92 571,999.49
9/15/2023 304101859 30 4901 West Irving Park 8,800,895.09 8,786,300.63 4,876,065.98 02/13/2023 20,595.28 552,068.57
8/17/2023 304101859 30 4901 West Irving Park 8,815,428.10 8,800,895.09 4,876,065.98 02/13/2023 20,595.28 531,473.29
7/17/2023 304101859 30 4901 West Irving Park 8,831,099.32 8,815,428.10 4,876,065.98 02/13/2023 19,930.92 510,878.01
6/16/2023 304101859 30 4901 West Irving Park 8,845,505.16 8,831,099.32 4,876,065.98 02/13/2023 20,595.29 490,947.09
5/17/2023 304101859 30 4901 West Irving Park 8,861,053.81 8,845,505.16 4,876,065.98 02/13/2023 19,930.92 470,351.80
4/17/2023 1647637 27 Clinton Crossings Medical Office 8,969,923.99 8,946,467.53 - 12/12/2022 - -
4/17/2023 304101859 30 4901 West Irving Park 8,875,333.54 8,861,053.81 4,876,065.98 02/13/2023 20,595.28 450,420.88
3/17/2023 304101859 30 4901 West Irving Park 8,893,176.62 8,875,333.54 4,876,065.98 02/13/2023 18,602.19 429,825.60
2/17/2023 304101859 30 4901 West Irving Park 8,907,321.10 8,893,176.62 4,876,065.98 02/13/2023 20,595.29 411,223.41
1/18/2023 304101859 30 4901 West Irving Park 8,921,406.03 8,907,321.10 3,964,600.49 02/11/2022 16,745.48 390,628.12
12/16/2022 304101859 30 4901 West Irving Park 8,936,645.39 8,921,406.03 3,964,600.49 02/11/2022 16,205.30 373,882.64
11/18/2022 304101859 30 4901 West Irving Park 8,950,606.86 8,936,645.39 3,964,600.49 02/11/2022 16,745.48 357,677.34
10/17/2022 304101859 30 4901 West Irving Park 8,965,727.22 8,950,606.86 3,964,600.49 02/11/2022 16,205.30 340,931.86
9/16/2022 304101859 30 4901 West Irving Park 8,979,566.25 8,965,727.22 3,964,600.49 02/11/2022 16,745.48 324,726.56
8/17/2022 304101859 30 4901 West Irving Park 8,993,347.01 8,979,566.25 3,964,600.49 02/11/2022 16,745.48 307,981.08
7/15/2022 304101859 30 4901 West Irving Park 9,008,293.21 8,993,347.01 3,964,600.49 02/11/2022 16,205.31 291,235.60
Reports Available at sf.citidirect.com v. 21.09.28 Page 22 of 43 © Copyright 2026 Citigroup

Citigroup Commercial Mortgage Trust 2017-B1
Commercial Mortgage Pass-Through Certificates, Series 2017-B1
HISTORICAL APPRAISAL REDUCTION DETAIL
May 15, 2026
Distribution Beginning Ending Appraisal Appraisal Most Recent Cumulative
Date Loan ID OMCR Property Name Scheduled Balance Scheduled Balance Reduction Amount Reduction Date ASER Amount ASER Amount
6/17/2022 304101859 30 4901 West Irving Park 9,021,953.02 9,008,293.21 3,964,600.49 02/11/2022 16,745.48 275,030.29
5/17/2022 304101859 30 4901 West Irving Park 9,036,782.65 9,021,953.02 3,964,600.49 02/11/2022 16,205.30 258,284.81
4/15/2022 304101859 30 4901 West Irving Park 9,050,322.51 9,036,782.65 3,964,600.49 02/11/2022 16,745.48 242,079.51
3/17/2022 304101859 30 4901 West Irving Park 9,067,499.87 9,050,322.51 3,964,600.49 02/11/2022 15,124.95 225,334.03
2/17/2022 304101859 30 4901 West Irving Park 9,080,910.41 9,067,499.87 3,964,600.49 02/11/2022 16,745.48 210,209.08
1/18/2022 304101859 30 4901 West Irving Park 9,094,264.48 9,080,910.41 2,716,535.50 03/11/2021 11,473.97 193,463.60
12/17/2021 304101859 30 4901 West Irving Park 9,108,799.44 9,094,264.48 2,716,535.50 03/11/2021 11,103.84 181,989.63
11/18/2021 304101859 30 4901 West Irving Park 9,122,036.09 9,108,799.44 2,716,535.50 03/11/2021 11,473.97 170,885.79
10/18/2021 304101859 30 4901 West Irving Park 9,136,457.88 9,122,036.09 2,716,535.50 03/11/2021 11,103.84 159,411.82
9/17/2021 304101859 30 4901 West Irving Park 9,149,578.09 9,136,457.88 2,716,535.50 03/11/2021 11,473.97 148,307.98
8/17/2021 304101859 30 4901 West Irving Park 9,162,643.06 9,149,578.09 2,716,535.50 03/11/2021 11,473.97 136,834.01
7/16/2021 304101859 30 4901 West Irving Park 9,176,899.38 9,162,643.06 2,716,535.50 03/11/2021 11,103.84 125,360.04
6/17/2021 304101859 30 4901 West Irving Park 9,189,849.32 9,176,899.38 2,716,535.50 03/11/2021 11,473.97 114,256.20
5/17/2021 304101859 30 4901 West Irving Park 9,203,994.77 9,189,849.32 2,716,535.50 03/11/2021 11,103.84 102,782.23
5/17/2021 304101861 4 Old Town San Diego Hotel Portfolio 52,238,198.79 52,142,057.56 - (152,355.24 ) -
4/16/2021 304101859 30 4901 West Irving Park 9,216,830.63 9,203,994.77 2,716,535.50 03/11/2021 11,473.97 91,678.39
4/16/2021 304101861 4 Old Town San Diego Hotel Portfolio 52,327,266.50 52,238,198.79 13,176,669.56 12/11/2020 - 152,355.24
3/17/2021 1648607 24 Hotel Indigo El Paso 10,395,520.76 10,376,494.06 - (10,601.99 ) -
3/17/2021 304101859 30 4901 West Irving Park 9,233,374.53 9,216,830.63 2,716,535.50 03/11/2021 10,363.58 80,204.42
3/17/2021 304101861 4 Old Town San Diego Hotel Portfolio 52,436,131.77 52,327,266.50 13,176,669.56 12/11/2020 47,399.41 152,355.24
2/18/2021 1648607 24 Hotel Indigo El Paso 10,410,402.46 10,395,520.76 - 12/11/2020 - 10,601.99
2/18/2021 304101859 30 4901 West Irving Park 9,246,086.69 9,233,374.53 1,675,140.96 04/13/2020 7,075.38 69,840.84
2/18/2021 304101861 4 Old Town San Diego Hotel Portfolio 52,524,413.46 52,436,131.77 13,176,669.56 12/11/2020 52,477.92 104,955.83
1/15/2021 1648607 24 Hotel Indigo El Paso 10,425,223.98 10,410,402.46 - 12/11/2020 - 10,601.99
1/15/2021 304101859 30 4901 West Irving Park 9,258,745.33 9,246,086.69 1,675,140.96 04/13/2020 7,075.38 62,765.46
1/15/2021 304101861 4 Old Town San Diego Hotel Portfolio 52,612,344.58 52,524,413.46 13,176,669.56 12/11/2020 52,477.91 52,477.91
12/17/2020 1648607 24 Hotel Indigo El Paso 10,441,347.57 10,425,223.98 - 12/11/2020 - 10,601.99
12/17/2020 304101859 30 4901 West Irving Park 9,272,610.03 9,258,745.33 1,675,140.96 04/13/2020 6,847.14 55,690.08
12/17/2020 304101861 4 Old Town San Diego Hotel Portfolio 52,706,678.26 52,612,344.58 13,176,669.56 12/11/2020 - -
11/18/2020 1648607 24 Hotel Indigo El Paso 10,456,043.96 10,441,347.57 2,614,010.99 11/12/2020 10,601.99 10,601.99
11/18/2020 304101859 30 4901 West Irving Park 9,285,157.00 9,272,610.03 1,675,140.96 04/13/2020 7,075.38 48,842.94
10/19/2020 304101859 30 4901 West Irving Park 9,298,914.07 9,285,157.00 1,675,140.96 04/13/2020 6,847.14 41,767.56
9/17/2020 304101859 30 4901 West Irving Park 9,311,350.29 9,298,914.07 1,675,140.96 04/13/2020 7,075.38 34,920.42
Reports Available at sf.citidirect.com v. 21.09.28 Page 23 of 43 © Copyright 2026 Citigroup

Citigroup Commercial Mortgage Trust 2017-B1
Commercial Mortgage Pass-Through Certificates, Series 2017-B1
HISTORICAL APPRAISAL REDUCTION DETAIL
May 15, 2026
Distribution Beginning Ending Appraisal Appraisal Most Recent Cumulative
Date Loan ID OMCR Property Name Scheduled Balance Scheduled Balance Reduction Amount Reduction Date ASER Amount ASER Amount
8/17/2020 304101859 30 4901 West Irving Park 9,323,734.15 9,311,350.29 1,675,140.96 04/13/2020 7,075.38 27,845.04
7/17/2020 304101859 30 4901 West Irving Park 9,337,334.02 9,323,734.15 1,675,140.96 04/13/2020 6,847.14 20,769.66
6/17/2020 304101859 30 4901 West Irving Park 9,349,608.49 9,337,334.02 1,675,140.96 04/13/2020 7,075.38 13,922.52
5/15/2020 304101859 30 4901 West Irving Park 9,363,102.92 9,349,608.49 1,675,140.96 04/13/2020 6,847.14 6,847.14
4/17/2020 304101859 30 4901 West Irving Park 9,375,268.89 9,363,102.92 1,675,140.96 04/13/2020 - -
Reports Available at sf.citidirect.com v. 21.09.28 Page 24 of 43 © Copyright 2026 Citigroup

Citigroup Commercial Mortgage Trust 2017-B1
Commercial Mortgage Pass-Through Certificates, Series 2017-B1
LOAN MODIFICATION DETAIL
May 15, 2026
Modification Modification
Loan ID OMCR Property Name Date Code (4)
1749833 13 DoubleTree Lafayette 04/01/2020 8
1648607 24 Hotel Indigo El Paso 07/01/2020 8
304101861 4 Old Town San Diego Hotel Portfolio 06/01/2020 8
Total Count = 3
Reports Available at sf.citidirect.com v. 21.09.28 Page 25 of 43 © Copyright 2026 Citigroup

Citigroup Commercial Mortgage Trust 2017-B1
Commercial Mortgage Pass-Through Certificates, Series 2017-B1
HISTORICAL LOAN MODIFICATION DETAIL
May 15, 2026
Distribution Modification Modification
Date Loan ID OMCR Property Name Date Code (4)
05/15/2026 1749833 13 DoubleTree Lafayette 04/01/2020 8
05/15/2026 1648607 24 Hotel Indigo El Paso 07/01/2020 8
05/15/2026 304101861 4 Old Town San Diego Hotel Portfolio 06/01/2020 8
04/17/2026 1749833 13 DoubleTree Lafayette 04/01/2020 8
04/17/2026 1648607 24 Hotel Indigo El Paso 07/01/2020 8
04/17/2026 304101861 4 Old Town San Diego Hotel Portfolio 06/01/2020 8
03/17/2026 1749833 13 DoubleTree Lafayette 04/01/2020 8
03/17/2026 1648607 24 Hotel Indigo El Paso 07/01/2020 8
03/17/2026 304101861 4 Old Town San Diego Hotel Portfolio 06/01/2020 8
02/18/2026 1749833 13 DoubleTree Lafayette 04/01/2020 8
02/18/2026 1648607 24 Hotel Indigo El Paso 07/01/2020 8
02/18/2026 304101861 4 Old Town San Diego Hotel Portfolio 06/01/2020 8
01/16/2026 1749833 13 DoubleTree Lafayette 04/01/2020 8
01/16/2026 1648607 24 Hotel Indigo El Paso 07/01/2020 8
01/16/2026 304101861 4 Old Town San Diego Hotel Portfolio 06/01/2020 8
12/17/2025 1749833 13 DoubleTree Lafayette 04/01/2020 8
12/17/2025 1648607 24 Hotel Indigo El Paso 07/01/2020 8
12/17/2025 304101861 4 Old Town San Diego Hotel Portfolio 06/01/2020 8
11/18/2025 1749833 13 DoubleTree Lafayette 04/01/2020 8
11/18/2025 1648607 24 Hotel Indigo El Paso 07/01/2020 8
11/18/2025 304101861 4 Old Town San Diego Hotel Portfolio 06/01/2020 8
10/20/2025 1749833 13 DoubleTree Lafayette 04/01/2020 8
10/20/2025 1648607 24 Hotel Indigo El Paso 07/01/2020 8
10/20/2025 304101861 4 Old Town San Diego Hotel Portfolio 06/01/2020 8
09/17/2025 1749833 13 DoubleTree Lafayette 04/01/2020 8
09/17/2025 1648607 24 Hotel Indigo El Paso 07/01/2020 8
09/17/2025 304101861 4 Old Town San Diego Hotel Portfolio 06/01/2020 8
08/15/2025 1749833 13 DoubleTree Lafayette 04/01/2020 8
08/15/2025 1648607 24 Hotel Indigo El Paso 07/01/2020 8
08/15/2025 304101861 4 Old Town San Diego Hotel Portfolio 06/01/2020 8
07/17/2025 1749833 13 DoubleTree Lafayette 04/01/2020 8
07/17/2025 1648607 24 Hotel Indigo El Paso 07/01/2020 8
07/17/2025 304101861 4 Old Town San Diego Hotel Portfolio 06/01/2020 8
Reports Available at sf.citidirect.com v. 21.09.28 Page 26 of 43 © Copyright 2026 Citigroup

Citigroup Commercial Mortgage Trust 2017-B1
Commercial Mortgage Pass-Through Certificates, Series 2017-B1
HISTORICAL LOAN MODIFICATION DETAIL
May 15, 2026
Distribution Modification Modification
Date Loan ID OMCR Property Name Date Code (4)
06/17/2025 1749833 13 DoubleTree Lafayette 04/01/2020 8
06/17/2025 1648607 24 Hotel Indigo El Paso 07/01/2020 8
06/17/2025 304101861 4 Old Town San Diego Hotel Portfolio 06/01/2020 8
05/16/2025 1749833 13 DoubleTree Lafayette 04/01/2020 8
05/16/2025 1648607 24 Hotel Indigo El Paso 07/01/2020 8
05/16/2025 304101861 4 Old Town San Diego Hotel Portfolio 06/01/2020 8
04/17/2025 1749833 13 DoubleTree Lafayette 04/01/2020 8
04/17/2025 1648607 24 Hotel Indigo El Paso 07/01/2020 8
04/17/2025 304101861 4 Old Town San Diego Hotel Portfolio 06/01/2020 8
03/17/2025 1749833 13 DoubleTree Lafayette 04/01/2020 8
03/17/2025 1648607 24 Hotel Indigo El Paso 07/01/2020 8
03/17/2025 304101861 4 Old Town San Diego Hotel Portfolio 06/01/2020 8
02/18/2025 1749833 13 DoubleTree Lafayette 04/01/2020 8
02/18/2025 1648607 24 Hotel Indigo El Paso 07/01/2020 8
02/18/2025 304101861 4 Old Town San Diego Hotel Portfolio 06/01/2020 8
01/17/2025 1749833 13 DoubleTree Lafayette 04/01/2020 8
01/17/2025 1648607 24 Hotel Indigo El Paso 07/01/2020 8
01/17/2025 304101861 4 Old Town San Diego Hotel Portfolio 06/01/2020 8
12/17/2024 1749833 13 DoubleTree Lafayette 04/01/2020 8
12/17/2024 1648607 24 Hotel Indigo El Paso 07/01/2020 8
12/17/2024 304101861 4 Old Town San Diego Hotel Portfolio 06/01/2020 8
11/18/2024 1749833 13 DoubleTree Lafayette 04/01/2020 8
11/18/2024 1648607 24 Hotel Indigo El Paso 07/01/2020 8
11/18/2024 304101861 4 Old Town San Diego Hotel Portfolio 06/01/2020 8
10/18/2024 1749833 13 DoubleTree Lafayette 04/01/2020 8
10/18/2024 1648607 24 Hotel Indigo El Paso 07/01/2020 8
10/18/2024 304101861 4 Old Town San Diego Hotel Portfolio 06/01/2020 8
09/17/2024 1749833 13 DoubleTree Lafayette 04/01/2020 8
09/17/2024 1648607 24 Hotel Indigo El Paso 07/01/2020 8
09/17/2024 304101861 4 Old Town San Diego Hotel Portfolio 06/01/2020 8
08/16/2024 1749833 13 DoubleTree Lafayette 04/01/2020 8
08/16/2024 1648607 24 Hotel Indigo El Paso 07/01/2020 8
08/16/2024 304101861 4 Old Town San Diego Hotel Portfolio 06/01/2020 8
Reports Available at sf.citidirect.com v. 21.09.28 Page 27 of 43 © Copyright 2026 Citigroup

Citigroup Commercial Mortgage Trust 2017-B1
Commercial Mortgage Pass-Through Certificates, Series 2017-B1
HISTORICAL LOAN MODIFICATION DETAIL
May 15, 2026
Distribution Modification Modification
Date Loan ID OMCR Property Name Date Code (4)
07/17/2024 1749833 13 DoubleTree Lafayette 04/01/2020 8
07/17/2024 1648607 24 Hotel Indigo El Paso 07/01/2020 8
07/17/2024 304101861 4 Old Town San Diego Hotel Portfolio 06/01/2020 8
06/17/2024 1749833 13 DoubleTree Lafayette 04/01/2020 8
06/17/2024 1648607 24 Hotel Indigo El Paso 07/01/2020 8
06/17/2024 304101861 4 Old Town San Diego Hotel Portfolio 06/01/2020 8
05/17/2024 1749833 13 DoubleTree Lafayette 04/01/2020 8
05/17/2024 1648607 24 Hotel Indigo El Paso 07/01/2020 8
05/17/2024 304101861 4 Old Town San Diego Hotel Portfolio 06/01/2020 8
04/17/2024 1749833 13 DoubleTree Lafayette 04/01/2020 8
04/17/2024 1648607 24 Hotel Indigo El Paso 07/01/2020 8
04/17/2024 304101861 4 Old Town San Diego Hotel Portfolio 06/01/2020 8
03/15/2024 1749833 13 DoubleTree Lafayette 04/01/2020 8
03/15/2024 1648607 24 Hotel Indigo El Paso 07/01/2020 8
03/15/2024 304101861 4 Old Town San Diego Hotel Portfolio 06/01/2020 8
02/16/2024 1749833 13 DoubleTree Lafayette 04/01/2020 8
02/16/2024 1648607 24 Hotel Indigo El Paso 07/01/2020 8
02/16/2024 304101861 4 Old Town San Diego Hotel Portfolio 06/01/2020 8
01/18/2024 1749833 13 DoubleTree Lafayette 04/01/2020 8
01/18/2024 1648607 24 Hotel Indigo El Paso 07/01/2020 8
01/18/2024 304101861 4 Old Town San Diego Hotel Portfolio 06/01/2020 8
12/15/2023 1749833 13 DoubleTree Lafayette 04/01/2020 8
12/15/2023 1648607 24 Hotel Indigo El Paso 07/01/2020 8
12/15/2023 304101861 4 Old Town San Diego Hotel Portfolio 06/01/2020 8
11/17/2023 1749833 13 DoubleTree Lafayette 04/01/2020 8
11/17/2023 1648607 24 Hotel Indigo El Paso 07/01/2020 8
11/17/2023 304101861 4 Old Town San Diego Hotel Portfolio 06/01/2020 8
10/17/2023 1749833 13 DoubleTree Lafayette 04/01/2020 8
10/17/2023 1648607 24 Hotel Indigo El Paso 07/01/2020 8
10/17/2023 304101861 4 Old Town San Diego Hotel Portfolio 06/01/2020 8
09/15/2023 1749833 13 DoubleTree Lafayette 04/01/2020 8
09/15/2023 1648607 24 Hotel Indigo El Paso 07/01/2020 8
09/15/2023 304101861 4 Old Town San Diego Hotel Portfolio 06/01/2020 8
Reports Available at sf.citidirect.com v. 21.09.28 Page 28 of 43 © Copyright 2026 Citigroup

Citigroup Commercial Mortgage Trust 2017-B1
Commercial Mortgage Pass-Through Certificates, Series 2017-B1
HISTORICAL LOAN MODIFICATION DETAIL
May 15, 2026
Distribution Modification Modification
Date Loan ID OMCR Property Name Date Code (4)
08/17/2023 1749833 13 DoubleTree Lafayette 04/01/2020 8
08/17/2023 1648607 24 Hotel Indigo El Paso 07/01/2020 8
08/17/2023 304101861 4 Old Town San Diego Hotel Portfolio 06/01/2020 8
07/17/2023 1749833 13 DoubleTree Lafayette 04/01/2020 8
07/17/2023 1648607 24 Hotel Indigo El Paso 07/01/2020 8
07/17/2023 304101861 4 Old Town San Diego Hotel Portfolio 06/01/2020 8
06/16/2023 1749833 13 DoubleTree Lafayette 04/01/2020 8
06/16/2023 1648607 24 Hotel Indigo El Paso 07/01/2020 8
06/16/2023 304101861 4 Old Town San Diego Hotel Portfolio 06/01/2020 8
05/17/2023 1749833 13 DoubleTree Lafayette 04/01/2020 8
05/17/2023 1648607 24 Hotel Indigo El Paso 07/01/2020 8
05/17/2023 304101861 4 Old Town San Diego Hotel Portfolio 06/01/2020 8
04/17/2023 1749833 13 DoubleTree Lafayette 04/01/2020 8
04/17/2023 1648607 24 Hotel Indigo El Paso 07/01/2020 8
04/17/2023 304101861 4 Old Town San Diego Hotel Portfolio 06/01/2020 8
03/17/2023 1749833 13 DoubleTree Lafayette 04/01/2020 8
03/17/2023 1648607 24 Hotel Indigo El Paso 07/01/2020 8
03/17/2023 304101861 4 Old Town San Diego Hotel Portfolio 06/01/2020 8
02/17/2023 1749833 13 DoubleTree Lafayette 04/01/2020 8
02/17/2023 1648607 24 Hotel Indigo El Paso 07/01/2020 8
02/17/2023 304101861 4 Old Town San Diego Hotel Portfolio 06/01/2020 8
01/18/2023 1749833 13 DoubleTree Lafayette 04/01/2020 8
01/18/2023 1648607 24 Hotel Indigo El Paso 07/01/2020 8
01/18/2023 304101861 4 Old Town San Diego Hotel Portfolio 06/01/2020 8
12/16/2022 1749833 13 DoubleTree Lafayette 04/01/2020 8
12/16/2022 1648607 24 Hotel Indigo El Paso 07/01/2020 8
12/16/2022 304101861 4 Old Town San Diego Hotel Portfolio 06/01/2020 8
11/18/2022 1749833 13 DoubleTree Lafayette 04/01/2020 8
11/18/2022 1648607 24 Hotel Indigo El Paso 07/01/2020 8
11/18/2022 304101861 4 Old Town San Diego Hotel Portfolio 06/01/2020 8
10/17/2022 1749833 13 DoubleTree Lafayette 04/01/2020 8
10/17/2022 1648607 24 Hotel Indigo El Paso 07/01/2020 8
10/17/2022 304101861 4 Old Town San Diego Hotel Portfolio 06/01/2020 8
Reports Available at sf.citidirect.com v. 21.09.28 Page 29 of 43 © Copyright 2026 Citigroup

Citigroup Commercial Mortgage Trust 2017-B1
Commercial Mortgage Pass-Through Certificates, Series 2017-B1
HISTORICAL LOAN MODIFICATION DETAIL
May 15, 2026
Distribution Modification Modification
Date Loan ID OMCR Property Name Date Code (4)
09/16/2022 1749833 13 DoubleTree Lafayette 04/01/2020 8
09/16/2022 1648607 24 Hotel Indigo El Paso 07/01/2020 8
09/16/2022 304101861 4 Old Town San Diego Hotel Portfolio 06/01/2020 8
08/17/2022 1749833 13 DoubleTree Lafayette 04/01/2020 8
08/17/2022 1648607 24 Hotel Indigo El Paso 07/01/2020 8
08/17/2022 304101861 4 Old Town San Diego Hotel Portfolio 06/01/2020 8
07/15/2022 1749833 13 DoubleTree Lafayette 04/01/2020 8
07/15/2022 1648607 24 Hotel Indigo El Paso 07/01/2020 8
07/15/2022 304101861 4 Old Town San Diego Hotel Portfolio 06/01/2020 8
06/17/2022 1749833 13 DoubleTree Lafayette 04/01/2020 8
06/17/2022 1648607 24 Hotel Indigo El Paso 07/01/2020 8
06/17/2022 304101861 4 Old Town San Diego Hotel Portfolio 06/01/2020 8
05/17/2022 1749833 13 DoubleTree Lafayette 04/01/2020 8
05/17/2022 1648607 24 Hotel Indigo El Paso 07/01/2020 8
05/17/2022 304101861 4 Old Town San Diego Hotel Portfolio 06/01/2020 8
04/15/2022 1749833 13 DoubleTree Lafayette 04/01/2020 8
04/15/2022 1648607 24 Hotel Indigo El Paso 07/01/2020 8
04/15/2022 304101861 4 Old Town San Diego Hotel Portfolio 06/01/2020 8
03/17/2022 1749833 13 DoubleTree Lafayette 04/01/2020 8
03/17/2022 1648607 24 Hotel Indigo El Paso 07/01/2020 8
03/17/2022 304101861 4 Old Town San Diego Hotel Portfolio 06/01/2020 8
02/17/2022 1749833 13 DoubleTree Lafayette 04/01/2020 8
02/17/2022 1648607 24 Hotel Indigo El Paso 07/01/2020 8
02/17/2022 304101861 4 Old Town San Diego Hotel Portfolio 06/01/2020 8
01/18/2022 1749833 13 DoubleTree Lafayette 04/01/2020 8
01/18/2022 1648607 24 Hotel Indigo El Paso 07/01/2020 8
01/18/2022 304101861 4 Old Town San Diego Hotel Portfolio 06/01/2020 8
12/17/2021 1749833 13 DoubleTree Lafayette 04/01/2020 8
12/17/2021 1648607 24 Hotel Indigo El Paso 07/01/2020 8
12/17/2021 304101861 4 Old Town San Diego Hotel Portfolio 06/01/2020 8
11/18/2021 1749833 13 DoubleTree Lafayette 04/01/2020 8
11/18/2021 1648607 24 Hotel Indigo El Paso 07/01/2020 8
11/18/2021 304101861 4 Old Town San Diego Hotel Portfolio 06/01/2020 8
Reports Available at sf.citidirect.com v. 21.09.28 Page 30 of 43 © Copyright 2026 Citigroup

Citigroup Commercial Mortgage Trust 2017-B1
Commercial Mortgage Pass-Through Certificates, Series 2017-B1
HISTORICAL LOAN MODIFICATION DETAIL
May 15, 2026
Distribution Modification Modification
Date Loan ID OMCR Property Name Date Code (4)
10/18/2021 1749833 13 DoubleTree Lafayette 04/01/2020 8
10/18/2021 1648607 24 Hotel Indigo El Paso 07/01/2020 8
10/18/2021 304101861 4 Old Town San Diego Hotel Portfolio 06/01/2020 8
09/17/2021 1749833 13 DoubleTree Lafayette 04/01/2020 8
09/17/2021 1648607 24 Hotel Indigo El Paso 07/01/2020 8
09/17/2021 304101861 4 Old Town San Diego Hotel Portfolio 06/01/2020 8
08/17/2021 1749833 13 DoubleTree Lafayette 04/01/2020 8
08/17/2021 1648607 24 Hotel Indigo El Paso 07/01/2020 8
08/17/2021 304101861 4 Old Town San Diego Hotel Portfolio 06/01/2020 8
07/16/2021 1749833 13 DoubleTree Lafayette 04/01/2020 8
07/16/2021 1648607 24 Hotel Indigo El Paso 07/01/2020 8
07/16/2021 304101861 4 Old Town San Diego Hotel Portfolio 06/01/2020 8
06/17/2021 1749833 13 DoubleTree Lafayette 04/01/2020 8
06/17/2021 1648607 24 Hotel Indigo El Paso 07/01/2020 8
06/17/2021 304101861 4 Old Town San Diego Hotel Portfolio 06/01/2020 8
05/17/2021 1749833 13 DoubleTree Lafayette 04/01/2020 8
05/17/2021 1648607 24 Hotel Indigo El Paso 07/01/2020 8
05/17/2021 304101861 4 Old Town San Diego Hotel Portfolio 06/01/2020 8
04/16/2021 1749833 13 DoubleTree Lafayette 04/01/2020 8
04/16/2021 1648607 24 Hotel Indigo El Paso 07/01/2020 8
04/16/2021 304101861 4 Old Town San Diego Hotel Portfolio 06/01/2020 8
03/17/2021 1749833 13 DoubleTree Lafayette 04/01/2020 8
03/17/2021 1648607 24 Hotel Indigo El Paso 07/01/2020 8
02/18/2021 1749833 13 DoubleTree Lafayette 04/01/2020 8
02/18/2021 1648607 24 Hotel Indigo El Paso 07/01/2020 8
01/15/2021 1749833 13 DoubleTree Lafayette 04/01/2020 8
01/15/2021 1648607 24 Hotel Indigo El Paso 07/01/2020 8
12/17/2020 1749833 13 DoubleTree Lafayette 04/01/2020 8
11/18/2020 1749833 13 DoubleTree Lafayette 04/01/2020 8
10/19/2020 1749833 13 DoubleTree Lafayette 04/01/2020 8
09/17/2020 1749833 13 DoubleTree Lafayette 04/01/2020 8
08/17/2020 1749833 13 DoubleTree Lafayette 04/01/2020 8
Reports Available at sf.citidirect.com v. 21.09.28 Page 31 of 43 © Copyright 2026 Citigroup

Citigroup Commercial Mortgage Trust 2017-B1
Commercial Mortgage Pass-Through Certificates, Series 2017-B1
SPECIALLY SERVICED LOAN DETAIL
May 15, 2026
Most Recent Most Recent
Servicer Master Servicer
Special Servicing Ending Ending Most Most Recent
Workout Fee Amount Scheduled Actual Recent Valuation Special
Loan ID OMCR Strategy (3) Plus Adjustments Balance Balance Value Date Transfer Date Return Date
1647637 27 11 (192,500.00 ) - - 16,000,000.00 08/05/2025 09/20/2021
304101859 30 2 3,500.00 8,770,446.11 9,401,987.23 5,700,000.00 01/22/2026 01/21/2020
Total Count = 2 (189,000.00 ) 8,770,446.11 9,401,987.23 21,700,000.00
Reports Available at sf.citidirect.com v. 21.09.28 Page 32 of 43 © Copyright 2026 Citigroup

Citigroup Commercial Mortgage Trust 2017-B1
Commercial Mortgage Pass-Through Certificates, Series 2017-B1 May 15, 2026
HISTORICAL SPECIALLY SERVICED LOANS
Special Servicing Ending Ending Most Most Recent Most Recent Most Recent
Distribution Workout Fee Amount Scheduled Actual Recent Valuation Special Servicer Master Servicer
Date Loan ID OMCR Strategy (3) Plus Adjustments Balance Balance Value Date Transfer Date Return Date
05/15/2026 1647637 27 11 (192,500.00 ) - - 16,000,000.00 08/05/2025 09/20/2021
04/17/2026 1647637 27 11 3,500.00 4,773,206.40 4,773,206.40 16,000,000.00 08/05/2025 09/20/2021
03/17/2026 1647637 27 11 3,500.00 5,432,179.86 5,470,484.83 16,000,000.00 08/05/2025 09/20/2021
02/18/2026 1647637 27 11 3,500.00 5,470,484.83 5,470,484.83 16,000,000.00 08/05/2025 09/20/2021
01/16/2026 1647637 27 11 3,500.00 5,506,705.17 5,506,705.17 16,000,000.00 08/05/2025 09/20/2021
12/17/2025 1647637 27 11 3,500.00 5,542,792.51 5,542,792.51 16,000,000.00 08/05/2025 09/20/2021
11/18/2025 1647637 27 11 3,500.00 5,579,408.23 5,615,228.60 16,000,000.00 08/05/2025 09/20/2021
10/20/2025 1647637 27 11 3,500.00 5,615,228.60 5,615,228.60 16,000,000.00 08/05/2025 09/20/2021
09/17/2025 1647637 27 11 3,500.00 5,651,586.88 5,687,142.21 16,000,000.00 08/05/2025 09/20/2021
08/15/2025 1647637 27 11 3,500.00 5,687,142.21 5,687,142.21 16,200,000.00 09/17/2024 09/20/2021
07/17/2025 1647637 27 11 3,500.00 5,722,566.98 5,722,566.98 16,200,000.00 09/17/2024 09/20/2021
06/17/2025 1647637 27 11 3,500.00 5,758,543.78 5,784,409.65 16,200,000.00 09/17/2024 09/20/2021
05/16/2025 1647637 27 11 3,500.00 8,316,178.80 8,316,178.80 16,200,000.00 09/17/2024 09/20/2021
04/17/2025 1647637 27 11 3,500.00 8,342,937.93 8,422,646.39 16,200,000.00 09/17/2024 09/20/2021
03/17/2025 1647637 27 11 3,500.00 8,368,610.56 8,422,646.39 16,200,000.00 09/17/2024 09/20/2021
02/18/2025 1647637 27 11 3,500.00 8,397,172.91 8,422,646.39 16,200,000.00 09/17/2024 09/20/2021
01/17/2025 1647637 27 11 3,500.00 8,422,646.39 8,448,026.33 16,200,000.00 09/17/2024 09/20/2021
12/17/2024 1647637 27 11 3,500.00 8,448,026.33 8,474,316.88 16,200,000.00 09/17/2024 09/20/2021
11/18/2024 1647637 27 11 3,500.00 8,474,316.88 8,499,507.08 16,200,000.00 09/17/2024 09/20/2021
10/18/2024 1647637 27 11 3,500.00 8,499,507.08 8,499,507.08 16,400,000.00 10/24/2023 09/20/2021
09/17/2024 1647637 27 11 3,500.00 8,525,614.66 8,525,614.66 16,400,000.00 10/24/2023 09/20/2021
08/16/2024 1647637 27 11 3,500.00 8,550,616.50 8,550,616.50 16,400,000.00 10/24/2023 09/20/2021
07/17/2024 1647637 27 11 3,500.00 8,575,526.53 8,575,526.53 16,400,000.00 10/24/2023 09/20/2021
06/17/2024 1647637 27 11 3,500.00 8,601,363.94 8,626,087.62 16,400,000.00 10/24/2023 09/20/2021
05/17/2024 1647637 27 11 3,500.00 8,626,087.62 8,626,087.62 16,400,000.00 10/24/2023 09/20/2021
04/17/2024 1647637 27 11 3,500.00 8,651,745.34 8,676,284.02 16,400,000.00 10/24/2023 09/20/2021
03/15/2024 1647637 27 11 3,500.00 8,676,284.02 8,676,284.02 16,400,000.00 10/24/2023 09/20/2021
02/16/2024 1647637 27 11 3,500.00 8,702,794.33 8,702,794.33 16,400,000.00 10/24/2023 09/20/2021
01/18/2024 1647637 27 11 3,500.00 8,727,145.56 8,751,407.37 16,400,000.00 10/24/2023 09/20/2021
12/15/2023 1647637 27 11 3,500.00 8,751,407.37 8,776,619.70 16,400,000.00 10/24/2023 09/20/2021
11/17/2023 1647637 27 11 3,500.00 8,776,619.70 8,776,619.70 18,200,000.00 12/01/2022 09/20/2021
10/17/2023 1647637 27 11 3,500.00 8,800,699.84 8,825,736.99 18,200,000.00 12/01/2022 09/20/2021
Reports Available at sf.citidirect.com v. 21.09.28 Page 33 of 43 © Copyright 2026 Citigroup

Citigroup Commercial Mortgage Trust 2017-B1
Commercial Mortgage Pass-Through Certificates, Series 2017-B1 May 15, 2026
HISTORICAL SPECIALLY SERVICED LOANS
Special Servicing Ending Ending Most Most Recent Most Recent Most Recent
Distribution Workout Fee Amount Scheduled Actual Recent Valuation Special Servicer Master Servicer
Date Loan ID OMCR Strategy (3) Plus Adjustments Balance Balance Value Date Transfer Date Return Date
09/15/2023 1647637 27 11 3,500.00 8,825,736.99 8,825,736.99 18,200,000.00 12/01/2022 09/20/2021
08/17/2023 1647637 27 11 3,500.00 8,849,636.77 8,849,636.77 18,200,000.00 12/01/2022 09/20/2021
07/17/2023 1647637 27 11 3,500.00 8,873,448.79 8,898,227.39 18,200,000.00 12/01/2022 09/20/2021
06/16/2023 1647637 27 11 3,500.00 8,898,227.39 8,898,227.39 18,200,000.00 12/01/2022 09/20/2021
05/17/2023 1647637 27 11 3,500.00 8,921,860.99 8,946,467.53 18,200,000.00 12/01/2022 09/20/2021
04/17/2023 1647637 27 11 3,500.00 8,946,467.53 8,946,467.53 18,200,000.00 12/01/2022 09/20/2021
03/17/2023 1647637 27 11 3,500.00 8,969,923.99 8,969,923.99 18,200,000.00 12/01/2022 09/20/2021
02/17/2023 1647637 27 11 3,500.00 8,996,491.28 8,996,491.28 18,200,000.00 12/01/2022 09/20/2021
01/18/2023 1647637 27 11 3,500.00 9,019,764.05 9,019,764.05 18,200,000.00 12/01/2022 09/20/2021
12/16/2022 1647637 27 11 3,500.00 9,042,951.36 9,042,951.36 18,200,000.00 12/01/2022 09/20/2021
11/18/2022 1647637 27 11 3,500.00 9,067,127.55 9,067,127.55 17,100,000.00 05/05/2017 09/20/2021
10/17/2022 1647637 27 11 3,500.00 9,090,140.94 9,090,140.94 17,100,000.00 05/05/2017 09/20/2021
09/16/2022 1647637 27 11 3,500.00 9,114,149.42 9,114,149.42 17,100,000.00 05/05/2017 09/20/2021
08/17/2022 1647637 27 11 3,500.00 9,136,990.15 9,159,747.00 17,100,000.00 05/05/2017 09/20/2021
07/15/2022 1647637 27 11 3,500.00 9,159,747.00 9,183,508.10 17,100,000.00 05/05/2017 09/20/2021
06/17/2022 1647637 27 11 3,500.00 9,183,508.10 9,183,508.10 17,100,000.00 05/05/2017 09/20/2021
05/17/2022 1647637 27 11 3,500.00 9,206,094.14 9,252,106.98 17,100,000.00 05/05/2017 09/20/2021
04/15/2022 1647637 27 11 3,500.00 9,229,690.52 9,252,106.98 17,100,000.00 05/05/2017 09/20/2021
03/17/2022 1647637 27 11 3,500.00 9,252,106.98 9,277,738.03 17,100,000.00 05/05/2017 09/20/2021
02/17/2022 1647637 27 13 3,500.00 9,277,738.03 9,299,978.05 17,100,000.00 05/05/2017 09/20/2021
01/18/2022 1647637 27 13 3,500.00 9,299,978.05 9,299,978.05 17,100,000.00 05/05/2017 09/20/2021
12/17/2021 1647637 27 13 3,500.00 9,322,136.41 9,322,136.41 17,100,000.00 05/05/2017 09/20/2021
11/18/2021 1647637 27 13 3,500.00 9,345,320.38 9,345,320.38 17,100,000.00 05/05/2017 09/20/2021
10/18/2021 1647637 27 13 3,500.00 9,367,312.24 9,367,312.24 17,100,000.00 05/05/2017 09/20/2021
03/17/2021 1648607 24 8 - 10,376,494.06 10,376,494.06 12,800,000.00 09/28/2020 08/10/2020 02/11/2021
02/18/2021 1648607 24 1 - 10,395,520.76 10,395,520.76 12,800,000.00 09/28/2020 08/10/2020
01/15/2021 1648607 24 1 - 10,410,402.46 10,425,223.98 12,800,000.00 09/28/2020 08/10/2020
12/17/2020 1648607 24 1 - 10,425,223.98 10,516,958.99 12,800,000.00 09/28/2020 08/10/2020
11/18/2020 1648607 24 1 - 10,441,347.57 10,531,349.63 20,700,000.00 02/01/2017 08/10/2020
10/19/2020 1648607 24 1 - 10,456,043.96 10,531,349.63 20,700,000.00 02/01/2017 08/10/2020
09/17/2020 1648607 24 13 - 10,472,046.92 10,531,349.63 20,700,000.00 02/01/2017 08/10/2020
08/17/2020 1648607 24 13 - 10,486,619.17 10,531,349.63 20,700,000.00 02/01/2017 08/10/2020
Reports Available at sf.citidirect.com v. 21.09.28 Page 34 of 43 © Copyright 2026 Citigroup

Citigroup Commercial Mortgage Trust 2017-B1
Commercial Mortgage Pass-Through Certificates, Series 2017-B1 May 15, 2026
HISTORICAL SPECIALLY SERVICED LOANS
Special Servicing Ending Ending Most Most Recent Most Recent Most Recent
Distribution Workout Fee Amount Scheduled Actual Recent Valuation Special Servicer Master Servicer
Date Loan ID OMCR Strategy (3) Plus Adjustments Balance Balance Value Date Transfer Date Return Date
05/15/2026 304101859 30 2 3,500.00 8,770,446.11 9,401,987.23 5,700,000.00 01/22/2026 01/21/2020
04/17/2026 304101859 30 2 3,500.00 8,770,446.11 9,401,987.23 5,700,000.00 01/22/2026 01/21/2020
03/17/2026 304101859 30 2 3,500.00 8,770,446.11 9,401,987.23 6,100,000.00 01/14/2025 01/21/2020
02/18/2026 304101859 30 2 3,500.00 8,770,446.11 9,401,987.23 6,100,000.00 01/14/2025 01/21/2020
01/16/2026 304101859 30 2 3,500.00 8,770,446.11 9,401,987.23 6,100,000.00 01/14/2025 01/21/2020
12/17/2025 304101859 30 2 3,500.00 8,770,446.11 9,401,987.23 6,100,000.00 01/14/2025 01/21/2020
11/18/2025 304101859 30 2 3,500.00 8,770,446.11 9,401,987.23 6,100,000.00 01/14/2025 01/21/2020
10/20/2025 304101859 30 2 3,500.00 8,770,446.11 9,401,987.23 6,100,000.00 01/14/2025 01/21/2020
09/17/2025 304101859 30 2 3,500.00 8,770,446.11 9,401,987.23 6,100,000.00 01/14/2025 01/21/2020
08/15/2025 304101859 30 2 3,500.00 8,770,446.11 9,401,987.23 6,100,000.00 01/14/2025 01/21/2020
07/17/2025 304101859 30 2 3,500.00 8,770,446.11 9,401,987.23 6,100,000.00 01/14/2025 01/21/2020
06/17/2025 304101859 30 2 3,500.00 8,770,446.11 9,401,987.23 6,100,000.00 01/14/2025 01/21/2020
05/16/2025 304101859 30 2 3,500.00 8,770,446.11 9,401,987.23 6,100,000.00 01/14/2025 01/21/2020
04/17/2025 304101859 30 2 3,500.00 8,770,446.11 9,401,987.23 6,100,000.00 01/14/2025 01/21/2020
03/17/2025 304101859 30 2 3,500.00 8,770,446.11 9,401,987.23 6,100,000.00 01/14/2025 01/21/2020
02/18/2025 304101859 30 2 3,500.00 8,770,446.11 9,401,987.23 6,100,000.00 01/14/2025 01/21/2020
01/17/2025 304101859 30 2 3,500.00 8,770,446.11 9,401,987.23 6,300,000.00 12/11/2023 01/21/2020
12/17/2024 304101859 30 2 3,500.00 8,770,446.11 9,401,987.23 6,300,000.00 12/11/2023 01/21/2020
11/18/2024 304101859 30 2 3,500.00 8,770,446.11 9,401,987.23 6,300,000.00 12/11/2023 01/21/2020
10/18/2024 304101859 30 2 3,500.00 8,770,446.11 9,401,987.23 6,300,000.00 12/11/2023 01/21/2020
09/17/2024 304101859 30 2 3,500.00 8,770,446.11 9,401,987.23 6,300,000.00 12/11/2023 01/21/2020
08/16/2024 304101859 30 2 3,500.00 8,770,446.11 9,401,987.23 6,300,000.00 12/11/2023 01/21/2020
07/17/2024 304101859 30 2 3,500.00 8,770,446.11 9,401,987.23 6,300,000.00 12/11/2023 01/21/2020
06/17/2024 304101859 30 2 3,500.00 8,770,446.11 9,401,987.23 6,300,000.00 12/11/2023 01/21/2020
05/17/2024 304101859 30 2 3,500.00 8,770,446.11 9,401,987.23 6,300,000.00 12/11/2023 01/21/2020
04/17/2024 304101859 30 2 3,500.00 8,770,446.11 9,401,987.23 6,300,000.00 12/11/2023 01/21/2020
03/15/2024 304101859 30 2 3,500.00 8,770,446.11 9,401,987.23 6,300,000.00 12/11/2023 01/21/2020
02/16/2024 304101859 30 2 3,500.00 8,770,446.11 9,401,987.23 6,300,000.00 12/11/2023 01/21/2020
01/18/2024 304101859 30 2 3,500.00 8,770,446.11 9,401,987.23 7,090,000.00 12/28/2022 01/21/2020
12/15/2023 304101859 30 2 3,500.00 8,770,446.11 9,401,987.23 7,090,000.00 12/28/2022 01/21/2020
11/17/2023 304101859 30 2 3,500.00 8,770,446.11 9,401,987.23 7,090,000.00 12/28/2022 01/21/2020
10/17/2023 304101859 30 2 3,500.00 8,770,446.11 9,401,987.23 7,090,000.00 12/28/2022 01/21/2020
Reports Available at sf.citidirect.com v. 21.09.28 Page 35 of 43 © Copyright 2026 Citigroup

Citigroup Commercial Mortgage Trust 2017-B1
Commercial Mortgage Pass-Through Certificates, Series 2017-B1 May 15, 2026
HISTORICAL SPECIALLY SERVICED LOANS
Special Servicing Ending Ending Most Most Recent Most Recent Most Recent
Distribution Workout Fee Amount Scheduled Actual Recent Valuation Special Servicer Master Servicer
Date Loan ID OMCR Strategy (3) Plus Adjustments Balance Balance Value Date Transfer Date Return Date
09/15/2023 304101859 30 2 3,500.00 8,786,300.63 9,401,987.23 7,090,000.00 12/28/2022 01/21/2020
08/17/2023 304101859 30 2 3,500.00 8,800,895.09 9,401,987.23 7,090,000.00 12/28/2022 01/21/2020
07/17/2023 304101859 30 2 3,500.00 8,815,428.10 9,401,987.23 7,090,000.00 12/28/2022 01/21/2020
06/16/2023 304101859 30 2 3,500.00 8,831,099.32 9,401,987.23 7,090,000.00 12/28/2022 01/21/2020
05/17/2023 304101859 30 2 3,500.00 8,845,505.16 9,401,987.23 7,090,000.00 12/28/2022 01/21/2020
04/17/2023 304101859 30 2 3,500.00 8,861,053.81 9,401,987.23 7,090,000.00 12/28/2022 01/21/2020
03/17/2023 304101859 30 2 3,500.00 8,875,333.54 9,401,987.23 7,090,000.00 12/28/2022 01/21/2020
02/17/2023 304101859 30 2 3,500.00 8,893,176.62 9,401,987.23 7,090,000.00 12/28/2022 01/21/2020
01/18/2023 304101859 30 2 3,500.00 8,907,321.10 9,401,987.23 7,450,000.00 12/19/2021 01/21/2020
12/16/2022 304101859 30 2 3,500.00 8,921,406.03 9,401,987.23 7,450,000.00 12/19/2021 01/21/2020
11/18/2022 304101859 30 2 3,500.00 8,936,645.39 9,401,987.23 7,450,000.00 12/19/2021 01/21/2020
10/17/2022 304101859 30 2 3,500.00 8,950,606.86 9,401,987.23 7,450,000.00 12/19/2021 01/21/2020
09/16/2022 304101859 30 2 3,500.00 8,965,727.22 9,401,987.23 7,450,000.00 12/19/2021 01/21/2020
08/17/2022 304101859 30 2 3,500.00 8,979,566.25 9,401,987.23 7,450,000.00 12/19/2021 01/21/2020
07/15/2022 304101859 30 2 3,500.00 8,993,347.01 9,401,987.23 7,450,000.00 12/19/2021 01/21/2020
06/17/2022 304101859 30 2 3,500.00 9,008,293.21 9,401,987.23 7,450,000.00 12/19/2021 01/21/2020
05/17/2022 304101859 30 2 3,500.00 9,021,953.02 9,401,987.23 7,450,000.00 12/19/2021 01/21/2020
04/15/2022 304101859 30 2 3,500.00 9,036,782.65 9,401,987.23 7,450,000.00 12/19/2021 01/21/2020
03/17/2022 304101859 30 2 3,500.00 9,050,322.51 9,401,987.23 7,450,000.00 12/19/2021 01/21/2020
02/17/2022 304101859 30 2 3,500.00 9,067,499.87 9,401,987.23 7,450,000.00 12/19/2021 01/21/2020
01/18/2022 304101859 30 2 3,500.00 9,080,910.41 9,401,987.23 8,330,000.00 01/14/2021 01/21/2020
12/17/2021 304101859 30 2 3,500.00 9,094,264.48 9,401,987.23 8,330,000.00 01/14/2021 01/21/2020
11/18/2021 304101859 30 2 3,500.00 9,108,799.44 9,413,989.49 8,330,000.00 01/14/2021 01/21/2020
10/18/2021 304101859 30 2 3,500.00 9,122,036.09 9,413,989.49 8,330,000.00 01/14/2021 01/21/2020
09/17/2021 304101859 30 2 3,500.00 9,136,457.88 9,413,989.49 8,330,000.00 01/14/2021 01/21/2020
08/17/2021 304101859 30 2 3,500.00 9,149,578.09 9,413,989.49 8,330,000.00 01/14/2021 01/21/2020
07/16/2021 304101859 30 2 3,500.00 9,162,643.06 9,413,989.49 8,330,000.00 01/14/2021 01/21/2020
06/17/2021 304101859 30 2 3,500.00 9,176,899.38 9,413,989.49 8,330,000.00 01/14/2021 01/21/2020
05/17/2021 304101859 30 2 3,500.00 9,189,849.32 9,413,989.49 8,330,000.00 01/14/2021 01/21/2020
04/16/2021 304101859 30 2 3,500.00 9,203,994.77 9,413,989.49 8,330,000.00 01/14/2021 01/21/2020
03/17/2021 304101859 30 2 3,500.00 9,216,830.63 9,413,989.49 8,330,000.00 01/14/2021 01/21/2020
02/18/2021 304101859 30 2 3,500.00 9,233,374.53 9,413,989.49 8,500,000.00 02/29/2020 01/21/2020
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Citigroup Commercial Mortgage Trust 2017-B1
Commercial Mortgage Pass-Through Certificates, Series 2017-B1 May 15, 2026
HISTORICAL SPECIALLY SERVICED LOANS
Special Servicing Ending Ending Most Most Recent Most Recent Most Recent
Distribution Workout Fee Amount Scheduled Actual Recent Valuation Special Servicer Master Servicer
Date Loan ID OMCR Strategy (3) Plus Adjustments Balance Balance Value Date Transfer Date Return Date
01/15/2021 304101859 30 2 3,500.00 9,246,086.69 9,413,989.49 8,500,000.00 02/29/2020 01/21/2020
12/17/2020 304101859 30 2 3,500.00 9,258,745.33 9,413,989.49 8,500,000.00 02/29/2020 01/21/2020
11/18/2020 304101859 30 2 3,500.00 9,272,610.03 9,413,989.49 8,500,000.00 02/29/2020 01/21/2020
10/19/2020 304101859 30 2 3,500.00 9,285,157.00 9,413,989.49 8,500,000.00 02/29/2020 01/21/2020
09/17/2020 304101859 30 2 3,500.00 9,298,914.07 9,413,989.49 8,500,000.00 02/29/2020 01/21/2020
08/17/2020 304101859 30 2 3,500.00 9,311,350.29 9,413,989.49 8,500,000.00 02/29/2020 01/21/2020
07/17/2020 304101859 30 2 3,500.00 9,323,734.15 9,413,989.49 8,500,000.00 02/29/2020 01/21/2020
06/17/2020 304101859 30 2 3,500.00 9,337,334.02 9,413,989.49 8,500,000.00 02/29/2020 01/21/2020
05/15/2020 304101859 30 2 3,500.00 9,349,608.49 9,413,989.49 8,500,000.00 02/29/2020 01/21/2020
04/17/2020 304101859 30 13 3,500.00 9,363,102.92 9,413,989.49 8,500,000.00 02/29/2020 01/21/2020
03/17/2020 304101859 30 13 3,500.00 9,375,268.89 9,413,989.49 13,900,000.00 02/15/2017 01/21/2020
02/18/2020 304101859 30 13 3,500.00 9,389,934.22 9,439,117.59 13,900,000.00 02/15/2017 01/21/2020
05/17/2021 304101861 4 8 5,441.48 52,142,057.56 52,142,057.56 65,600,000.00 10/29/2020 08/19/2020 04/21/2021
04/16/2021 304101861 4 1 (72,815.41 ) 52,238,198.79 52,327,266.50 82,000,000.00 07/06/2017 08/19/2020
03/17/2021 304101861 4 1 10,195.91 52,327,266.50 53,238,204.74 82,000,000.00 07/06/2017 08/19/2020
02/18/2021 304101861 4 13 11,307.34 52,436,131.77 53,238,204.74 82,000,000.00 07/06/2017 08/19/2020
01/15/2021 304101861 4 13 11,326.27 52,524,413.46 53,238,204.74 82,000,000.00 07/06/2017 08/19/2020
12/17/2020 304101861 4 13 10,980.56 52,612,344.58 53,238,204.74 82,000,000.00 07/06/2017 08/19/2020
11/18/2020 304101861 4 13 11,365.35 52,706,678.26 53,238,204.74 82,000,000.00 07/06/2017 08/19/2020
10/19/2020 304101861 4 13 11,018.23 52,793,885.58 53,238,204.74 82,000,000.00 07/06/2017 08/19/2020
09/17/2020 304101861 4 13 6,621.75 52,887,521.50 53,238,204.74 82,000,000.00 07/06/2017 08/19/2020
05/15/2020 307971614 23 8 - 11,908,830.85 11,908,830.85 55,750,000.00 04/07/2017 04/17/2020
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Citigroup Commercial Mortgage Trust 2017-B1
Commercial Mortgage Pass-Through Certificates, Series 2017-B1 May 15, 2026
UNSCHEDULED PRINCIPAL DETAIL
Liquidation / Liquid / Prepay Principal Principal Prepayment Interest Prepayment Yield Maintenance
Loan ID OMCR Prepayment Date Code (5) Collections Adjustments Excess / (Shortfall) Penalties (PPP) Penalties (YM)
1647637 27 04/27/2026 9 4,733,715.23 - - - 143,196.19
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Citigroup Commercial Mortgage Trust 2017-B1
Commercial Mortgage Pass-Through Certificates, Series 2017-B1 May 15, 2026
HISTORICAL UNSCHEDULED PRINCIPAL DETAIL
Distribution Liquidation / Liquid / Prepay Principal Principal Prepayment Interest Prepayment Yield Maintenance
Date Loan ID OMCR Prepayment Date Code (5) Collections Adjustments Excess / (Shortfall) Penalties (PPP) Penalties (YM)
5/15/2026 1647637 27 04/27/2026 9 4,733,715.23 - - - 143,196.19
4/17/2026 1647637 27 03/18/2026 1 622,478.45 - - - -
6/17/2025 1647637 27 06/01/2025 1 2,531,769.15 - - - -
4/17/2025 308511028 28 04/11/2025 2 8,807,720.12 - - - -
7/17/2023 300801627 44 06/28/2023 9 4,540,137.60 - - - 45,473.64
6/17/2022 307971614 23 06/03/2022 5 11,446,234.79 - - - -
5/17/2022 304101836 6 05/03/2022 2 42,000,000.00 - - - -
9/17/2019 1749084 22 08/01/2018 11 3,156,779.24 - - - 254,846.27
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Citigroup Commercial Mortgage Trust 2017-B1
Commercial Mortgage Pass-Through Certificates, Series 2017-B1 May 15, 2026
LIQUIDATED LOAN DETAIL
Beginning Most Liquidation Net Net Realized Date of Loss with
Scheduled Recent Sales Proceeds Liquidation Proceeds Loss to Current Current Cumulative Cumulative
Loan ID OMCR Balance Value Price Received Expense Available Trust Adj. to Loan Adj. to Loan Adj. to Loan Adj. to Trust
1647637 27 4,773,206.40 16,000,000.00 - 7,522,622.31 422,545.17 7,100,077.14 - - - -
Reports Available at sf.citidirect.com v. 21.09.28 Page 40 of 43 © Copyright 2026 Citigroup

Citigroup Commercial Mortgage Trust 2017-B1
Commercial Mortgage Pass-Through Certificates, Series 2017-B1 May 15, 2026
HISTORICAL LIQUIDATED LOAN
Beginning Most Liquidation Net Net Realized Date of Loss with
Distribution Scheduled Recent Sales Proceeds Liquidation Proceeds Loss to Current Current Cumulative Cumulative
Date Loan ID OMCR Balance Value Price Received Expense Available Trust Adj. to Loan Adj. to Loan Adj. to Loan Adj. to Trust
05/15/2026 1647637 27 4,773,206.40 16,000,000.00 - 7,522,622.31 422,545.17 7,100,077.14 - - - -
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Citigroup Commercial Mortgage Trust 2017-B1
Commercial Mortgage Pass-Through Certificates, Series 2017-B1 May 15, 2026
CREFC® INVESTOR REPORTING PACKAGE LEGENDS
1|CREFC Investor Reporting Package Legends
Property Type (1) Workout Strategy (3) Liquidation/Prepayment Code (5)
MF Multifamily 1 Modification 1 Partial Liquidation (Curtailment)
RT Retail 2 Foreclosure 2 Payoff Prior To Maturity
HC HealthCare 3 Bankruptcy 3 Disposition / Liquidation
IN Industrial 4 Extension 4 Repurchase / Substitution
MH Mobile Home Park 5 Note Sale 5 Full Payoff At Maturity
OF Office 6 DPO 6 DPO
MU Mixed Use 7 REO 7 Liquidation prior to 7/1/2006
LO Lodging 8 Resolved 8 Payoff With Penalty
SS Self Storage 9 Pending Return to Master Servicer 9 Payoff With Yield Maintenance
SE Securities 10 Deed In Lieu of Foreclosure 10 Curtailment With Penalty
CH Cooperative Housing 11 Full Payoff 11 Curtailment With Yield Maintenance
ZZ Missing Information 12 Reps and Warranties
SF SF 13 TBD
WH Warehouse 98 Other
OT Other
Modification Code (4)
Payment Status of Loan (2)
1 Maturity Date Extension
A In Grace Period 2 Amortization Change
B Late, but less than 30 Days 3 Principal Write-Off
0 Current 4 Blank (formerly Combination)
1 30-59 Days Delinquent 5 Temporary Rate Reduction
2 60-89 Days Delinquent 6 Capitalization of Interest
3 90-120 Days Delinquent 7 Capitalization of Taxes
4 Performing Matured Balloon 8 Other
5 Non Performing Matured Balloon 9 Combination
6 121+ Days Delinquent 10 Forbearance
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Citigroup Commercial Mortgage Trust 2017-B1
Commercial Mortgage Pass-Through Certificates, Series 2017-B1 May 15, 2026
NOTES
No Notes available for this deal at this time.
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