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Our lobby services are closed, Customer Service Bulletin. All permit applications can now be submitted online.

King County Permits has suspended lobby services in our Snoqualmie and Vashon Island offices. See available and alternative services

To ensure the safety of all customers and staff members, King County employees are following Public Health-Seattle & King County guidance and the Governor’s pandemic guidelines.

Popular documents:

For new construction, and additions/alterations to existing buildings, including commercial tenant improvements

What requires a permit?


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

You can also pick up materials at our Snoqualmie office, or have them mailed to you by calling 206-296-6600 or emailing

step 4

Plan Review

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

step 5


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




Full listings of all Permitting forms and information sheets

    Department of Local Services, Permitting Division


    35030 SE Douglas Street, Suite 210
    Snoqualmie, WA 98065-9266

    Mon, Tues, Thur, Fri:
    7:30-11:30 am & 1:00-3:00 pm

    Wednesday: Closed