10/30/2025 | Press release | Distributed by Public on 10/30/2025 13:14
UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM FOR SUBMISSION OF ELECTRONIC EXHIBITS FOR
ASSET-BACKED SECURITIES
Commission File Number of issuing entity: 333-207132-13
Central Index Key Number of issuing entity: 0001713393
Citigroup Commercial Mortgage Trust 2017-B1
(Exact name of issuing entity as specified in its charter)
Commission File Number of depositor: 333-207132
Central Index Key Number of depositor: 0001258361
Citigroup Commercial Mortgage Securities Inc.
(Exact name of depositor as specified in its charter)
Citi Real Estate Funding Inc.
Central Index Key Number: 0001701238
Morgan Stanley Mortgage Capital Holdings LLC
Central Index Key Number: 0001541557
Bank of America, National Association
Central Index Key Number: 0001102113
Citigroup Global Markets Realty Corp.
Central Index Key Number: 0001541001
(Exact names of sponsors as specified in their respective charters)
Richard Simpson (212) 816-5343
(Name and telephone number, including area code, of the person to contact in connection with this filing)
INFORMATION TO BE INCLUDED IN THIS FORM
| Item 1. | File an Asset Data File in accordance with Exhibit 601(b)(102) (17 CFR 229.601(b)(102)). | 
| Item 2. | File an Asset Related Document in accordance with Exhibit 601(b)(103) (17 CFR 229.601(b)(103)). | 
EXHIBIT INDEX
| Exhibit Number | Description | |
| Exhibit 102 | Asset Data File | |
| Exhibit 103 | Asset Related Document | 
SIGNATURES
The depositor has duly caused this Form to be signed on its behalf by the undersigned thereunto duly authorized.
| Citigroup Commercial Mortgage Securities Inc. | ||
| (Depositor) | ||
| Date: October 30, 2025 | By: | /s/ Richard Simpson | 
| Name: | Richard Simpson | |
| Title: | President | |