Everything you need to know about the permitting process for your project is one of the sites below. Find and click on your jurisdiction below and corroborate all zoning and building codes regulating your project, design criteria for your plans, etc, etc.
Click the link to their site https://www.portland.gov/bds
Click the link to their site https://www.beavertonoregon.gov/218/Building-Permits
Click the link to their site https://www.clackamas.us/building
Click the link to their site https://clark.wa.gov/community-development
Click the link to their site https://www.hillsboro-oregon.gov/our-city/departments/community-development/development-permitting/building-permits
Click the link to their site https://www.canbyoregon.gov/dev-services
Click the link to their site https://www.ci.oswego.or.us/building
Click the link to their site https://www.milwaukieoregon.gov/building
Click the link to their site https://www.orcity.org/building
Click the link to their site https://www.tigard-or.gov/your-government/departments/community-development/building-services
Click the link to their site https://www.tualatinoregon.gov/building
Click the link to their site https://westlinnoregon.gov/building
Click the link to their site https://www.ci.wilsonville.or.us/building
Click the link to their site
https://www.woodvillageor.gov/departments/public-works/permits/
Click the link to their site https://www.cityofvancouver.us/cdd/page/building-and-permitting-services
Click the link to their site https://www.cityofvancouver.us/cdd/page/building-and-permitting-services
Click the link to their site https://www.washingtoncountyor.gov/lut/building-services