State Bill 5290 implementation

Effective January 1, 2025, all permit development agencies in Washington—including Unincorporated King County—will implement State Bill 5290. Learn more

Temporary move during election season

Due to expected heavy traffic at the King County Elections Building, King County Permits customer service hours will temporarily move to the Renton Library (100 Mill Avenue S).
When: October 24 – November 7, on Mondays and Thursdays from 10:30 am to 3:30 pm

Binding Site Plan - Land use permit process

A binding site plan provides an alternative method for division of land.

A binding site plan provides an alternative method for division of land for commercial and industrial zoned property, mobile home parks, trailer parks, or condominiums.

Our subdivisions permit page has more information.

Check the legal authority Chapter 19A.20 of the King County Code.