Building Permits are required for most decks. A building permit is not required for decks where no part of the walking surface is more than 30 inches above adjacent grade.
Some decks may be exempt from requiring a building permit, but may still require a Zoning Permit, depending on specific site conditions or placement on the lot. To determine if you need a zoning permit visit or call the Planning and Zoning staff (503) 823-7526 at the Development Services Center.
See Deck Design Guide, an easy-to-use document to help design a deck, obtain a building permit and pass inspections, with pre-approved details and construction standards.
If you need additional assistance, we encourage you to visit the Development Services Center. Review staff is available to discuss your project with you, and can help identify key issues early in the planning stage. Bringing sketches and photographs with you is helpful.