Complete guide to building permit requirements in Seattle, WA. Find permit rules, costs, and how to apply for sheds, decks, fences, roofs, HVAC, electrical, pools, solar, and more.
Seattle Dept. of Construction & Inspections handles all building permits in Seattle.
→ Apply for a permit at Seattle Dept. of Construction & Inspections
Select your project type to get Seattle-specific requirements, costs, and how to apply:
Licensed local contractors know your area's permit requirements and handle the paperwork for you. Get free quotes in minutes.
Get 3 Free Contractor Quotes →Building permits in Seattle are issued by the Seattle Dept. of Construction & Inspections. Requirements, fees, and processing times vary by project type. Always verify current requirements with the building department before starting any project.
Most residential projects in Seattle that involve structural changes, electrical work, plumbing, HVAC, or projects over a certain size require a permit. Small cosmetic work typically does not.
Licensed local contractors know your area's permit requirements and handle the paperwork for you. Get free quotes in minutes.
Get 3 Free Contractor Quotes →