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There are several different types of permits for use of King County property that can be granted by Real Estate Services. If you're not sure what type you need, please contact us at RES.Permits@kingcounty.gov or 206-477-9401.

Types of Permits

A general Special Use Permit (SUP) is a permit for the use of King County property in which the County has an ownership interest. Submit your SUP request in the form of a letter, in addition to a completed application form.

There may be fees required for processing, administration, land use, inspection, and plan review associated with your SUP request. In addition, there may be a requirement to add King County as an additional insured on your insurance policy and/or bonding requirements to reduce King County exposure to liability and damage.

Your SUP application letter should include the following information:

  • Applicant's name, address, and phone number
  • How you propose to use County property
  • Plans showing the location of the proposed use
  • The proposed method of installation and construction
  • Define, if required, the proposed method of operation and maintenance
  • Define all the required permits necessary to perform the work or installation
  • Proposed duration of the use
  • The total cost associated with work or activities of the proposed work

Mail your letter of application and application form to:

Real Estate Services
500 Fourth Ave., Suite 830
Mailstop ADM-ES-0830
Seattle, WA 98104

You may also email your letter and application to RES.Permits@kingcounty.gov. If you have questions about the application process, please call us at 206-477-9350.

Gatherings such as block parties, festivals, parades, and other types of events require an Event Special Use Permit (SUP). Apply for an Event SUP in the form of a letter.

Your request letter must include the following information:

  • Applicant's name, address, and phone number
  • Purpose of the proposed event
  • Date and time of the event
  • One copy of a map showing the location of the proposed use
  • Certificate of insurance naming King County as an additional insured (if applicable)

Submit your request for an Event SUP at least sixty (60) days prior to the event.

Mail your Event SUP request letter to:

Real Estate Services
500 Fourth Ave., Suite 830
Mailstop ADM-ES-0830
Seattle, WA 98104

You may also email your request to RES.Permits@kingcounty.gov. If you have questions, please call us at 206-477-9350.

Certain businesses may be allowed to use portions of the County road right-of-way abutting their premises for outdoor business operations while King County Executive Order ACO-8-25-EO is in effect. A Special Use Permit is required for these uses. Complete applications must include:

  • a drawing or sketch of how the right-of-way will be used
  • proof of insurance naming King County as an additional insured party and
  • the digitally signed application form

There are no fees for this type of permit.