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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.

Applying For My Permit

The following information must be submitted when applying for a permit for a commercial alteration/tenant improvement. Since every project is unique, there may be some situations where you will be asked to provide additional information.



To submit for a permit, bring the completed building permit application and commercial system development charge form, required plans, additional materials and intake fees to the Development Services Center.

Separate Plumbing, Electrical, and Mechanical permits are required for alterations to those systems. Sub-contractors performing this work must be registered with the State of Oregon and carry a current CCB license.