Skip to main content
King County logo

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

What requires a permit?



step-1

Property Research

Check jurisdiction and zoning to determine whether your property is located in unincorporated King County or is located within city limits.

Find your jurisdiction

step 2

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.

Pre-application meeting packet

step 3

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
step 4

Plan Review

King County will review the application to ensure code compliance and safety requirements.

step 5

Inspections

King County inspects work to ensure code compliance and safety requirements.

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