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Certificates, permits, and licenses

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Business licenses

Information about when a King County business license is required and how to apply if you need one.

Permits customer services

Customer support for building, land use, and other permits issued by King County Permits.

Additional links

Do you need a permit?

Find out if you need a permit for your project. 

Document library

Find common forms and documents needed to do business with the Recorder's Office

Fire and special event permit process - Building and land use

Find out how to apply for permits involving flammable liquid tanks, fireworks, fire systems, and special events.

Food business permits

Learn how to get a new food business permit, renew an existing permit, or submit construction plans for retail food businesses. Short URL: kingcounty.gov/foodpermit

Food worker cards

Find out how to get food worker cards.

Frequently Asked Questions (FAQ)

Frequently asked questions about marriage licensing and wedding ceremonies

Frequently Asked Questions (FAQ)

Answers to frequently asked questions about online records search

Frequently Asked Questions (FAQ)

Answers to frequently asked questions about document recording

Make changes to birth or death certificates

How to make changes to birth and death certificates, including parentage and sex designation.

Marriage licensing

Congratulations on your upcoming marriage! King County wants to make obtaining your marriage license quick and easy.

Online records search

Search our free online database of King County's official records

Order a birth certificate

How to order a birth certificate for someone born in King County or Washington state.

Permit forms, application materials, and resources - Building and land use

The King County Permitting Division provides land use, building, and fire regulatory and operating permits, code enforcement, and a limited number of business licenses in unincorporated areas of the county.

Permits–customer services

Need help? You're in the right place! Feeling a bit lost on our new website? This page will guide you through all the different ways you can reach out to us. If you can't find what you're searching for, we're here to assist and ensure you get the information you need.

Permitting reports 

Find report readouts on new applications, issued permits, and permit performance.

Plumbing and gas piping applications and permits

Learn how to submit a plumbing or gas piping plan review application or get a homeowner's permit.

Right-of-way use permits

Right-of-way (ROW) use permits authorize the use of the King County right-of-way for a designated purpose.

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