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The City of Portland, Oregon

Development Services

From Concept to Construction

Phone: 503-823-7300


1900 SW 4th Ave, Portland, OR 97201

More Contact Info

Commercial Alterations - Tenant Improvements

This page contains information for any project that alters a commercial building without any increase in floor area (out or up), without structural changes and includes only minor changes to the exterior.

Commercial Alteration: Tenant Improvement Building Permits & Inspections