Commercial Alteration - Tenant Improvement Building Permits & Inspections
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Source: Commercial Alteration - Tenant Improvement Building Permits & Inspections ↗ Last modified: Sun, 19 Apr 2026 20:00:04 GMT
The City of Portland welcomes the opportunity to work with you on your commercial alteration- tenant improvement building permits and inspections. Learn more about what's required for a complete commercial alteration application. You can also research a property or schedule an appointment to discuss your project.
You can start with this list of forms (if you know what you need) and continue reading to learn more about when some forms are required.
Commercial building permit forms and information
The following information is part of the application. This is everything you might need when applying for a commercial alteration-tenant improvement permit. Since every project is unique, there may be some situations where you will be asked to provide additional information. Things you need to apply for this permit may include some or all of the following.
If you aren't sure what you need, contact Permitting Services. Forms include:
Building code summary
Applications must show how they meet the building code with a code summary. The building code summary is critical to convey design assumptions made for the building.
Building code summary requirements ↗
Building permit application
Commercial food establishments
Commercial systems development charge form
Guide to inspections
Change of use or occupancy
Change of use or change of occupancy webpage ↗
Life Safety forms
Requirements for Rack Storage System Permits
Shell permit acknowledgement statement
Simplified approach form
Submittal guidelines and submittal requirements
Submittal Requirements Commercial for the following can be found on Commercial Permit Submittal Requirements ↗
- Major Interior Alterations
- Minor Interior Alterations
- New Construction, Additions, Alterations with Exterior Work or Structural Changes