Apply for a commercial & multi-family permit
Permitting services are available online via this website and MyBuildingPermit.com. For details and information about our location and office hours, see our Customer Service Bulletin.
For new construction, and additions/alterations to existing buildings, including commercial tenant improvements
Check jurisdiction and zoning to determine whether your property is located in unincorporated King County or is located within city limits.
Schedule a pre-application meeting
Pre-application meetings are held between a prospective permit applicant and Permitting Department staff before a permit application is filed.
Download application materials
Find and download the application materials that align to your project on our permit application forms listed by packet page, including the following:
- Commercial Construction
- Commercial Tenant Improvements
- Commercial Signs
- Commercial Cellular Communication Facilities
- Commercial, Mechanical - available on MyBuildingPermit.com
King County will review the application to ensure code compliance and safety requirements.
- Permit review time forecast
- Check fee schedule
King County inspects work to ensure code compliance and safety requirements.
- Schedule an inspection – Online
Phone IVR, call 888-7728 –
IVR codesOffice phone 206-296-6600
- Building inspection information
OTHER RELATED PERMITS
Full listings of all Permitting forms and information sheets
Department of Local Services, Permitting Division
919 SW Grady Way, Suite 300
Renton, WA 98057
In-person customer service is by appointment only.
To reach customer service, call 206-296-6600 during the following call center hours:
9-11 a.m. and 12:30-2:30 p.m., Mon, Tues, Thurs, Fri