City of Portland, OR

06/26/2026 | News release | Distributed by Public on 06/26/2026 17:40

Minisplit installations: Faster, easier commercial mechanical permits start July 10

Label: News article
Skip the plan review and get your project moving.
Published
June 26, 2026 4:15 pm

In this article

Good news for building owners and contractors: starting Friday, July 10, installing a ductless minisplit in an existing commercial building gets a lot easier.

Until now, these projects needed a plan review before you could get a commercial mechanical permit. That added time, paperwork, and cost.

Beginning July 10, you can skip the plan review and go straight to purchasing a commercial mechanical permit-as long as your project meets a few simple criteria:

  • The unit is four tons or smaller.
  • Only one ductless minisplit system is installed per dwelling unit.
  • There are no penetrations through common walls between dwelling units or common areas.
  • The outdoor condenser can sit on an existing patio or deck.
  • The outdoor condenser can be wall-mounted on an exterior wall if it is at least five feet from the property line and the condenser encroaches no more than 20%.
  • No existing heat sources are being removed.

If your project doesn't meet these qualifications, don't worry, you can still move forward. You'll just need to apply for a commercial mechanical permit with plan review.

Send mechanical permit applications to [email protected].

This change is designed to save time, reduce costs, and help more heating-and-cooling projects move ahead quickly and safely.

Get the mechanical permit application.

City of Portland, OR published this content on June 26, 2026, and is solely responsible for the information contained herein. Distributed via Public Technologies (PUBT), unedited and unaltered, on June 26, 2026 at 23:40 UTC. If you believe the information included in the content is inaccurate or outdated and requires editing or removal, please contact us at [email protected]