Overview for changing a commercial space
If you plan to change the layout or structure of a commercial space, it’s called a Tenant Improvement. If you plan to change how a space is used, it’s called a Change of Use or Change of Occupancy. Your project might include both.
In all cases, you will need a building permit.
Research your project requirements
Find out how to categorize the work you want to do. Use our property research tool PortlandMaps to learn all about your location and the work that’s already been done.
We’ll show you how to find the information you need to research your project.
Prepare your application materials
Gather and complete the necessary documents for your project. Different projects will need different applications and forms, so be sure to check the details in this section.
Learn how to prepare materials you need to apply.
Apply, pay, and respond to feedback
You'll submit your complete application and pay your fees on DevHub. We’ll then contact you by email to tell you next steps. We might make comments on your plans to help them meet code requirements.
In either case, we’ll tell you if we need more information or if you're ready to begin your project.
📝 Tip: Be sure to respond quickly to keep your application moving.
Get more details on how to apply.
Get permit and start work
After you pay your fees, we can issue your permits. Unless you need certain pre-construction inspections, you can then start construction work. Rules vary by project, so be sure you know what your project needs before you start any construction work.
Learn more about what to do before you start the work.
Get inspections
You might need inspections before and/or during any construction work. All projects will need inspections after the work is completed. Once the work passes inspection, you’re all done!
Get details on how to schedule an inspection and make sure it goes smoothly.
Help us improve
We've made some updates to help you apply for your permit. Can you answer three quick questions to tell us how we did?