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Development Services

From Concept to Construction

Phone: 503-823-7300

TTY : 503-823-6868

1900 SW 4th Ave, Portland, OR 97201

Commercial Alterations - Tenant Improvements

This page contains information for any project that alters a commercial building with no increase in floor area (out or up), no structural changes and only minor changes to the exterior.


Plan Review Process

Some simple Commercial Alteration permits can be issued "over the counter" while you wait. You will meet with review staff from different departments who will check your construction documents to verify the proposed construction will meet the various codes. During the review, if information is missing, or if corrections are needed, you will be asked to return with that information.

If the project is more complex and a review cannot be completed over the counter, the plans will be taken in for further review. You will be sent a checksheet requesting any clarifications or corrections. For additional information on the review process, see the permitting process overview flowchart.

The bureaus/review groups that will check a commercial alteration project include:

  • Planning and Zoning
  • Life Safety
  • Bureau of Fire and Rescue
  • Structural
  • Addressing
  • Site Development Review
  • Plumbing
  • Bureau of Environmental Services Review
  • Bureau of Transportation
  • Bureau of Parks and Recreation Review
  • Urban Forestry Review
  • Water Bureau