DDES
900 Oakesdale Ave. SW
Renton, WA 98057-5212

Map

Phone:  206-296-6600
TTY:  206-296-7217

Service Center hours:*
Monday to Thursday,
7:30 a.m. - 4:30 p.m.;
Friday, 7:30 - 11:30 a.m.

*New hours effective July 7 Read more...

About / contact DDES

The Department of Development and Environmental Services (DDES) is the King County agency that issues building and land use permits for properties located in unincorporated King County. We also enforce county land use and building codes, staff the King County Fire Marshal Division, and issue business licenses.

DDES' Mission and Vision

Mission statement: To serve, educate and protect our community by shaping and implementing King County's development and environmental regulations.

Vision statement: DDES is a national leader promoting responsible and sustainable development to foster environmental quality, economic vitality and social benefit.

See DDES Mission, Vision & Values for the entire statement.

Contact information

Web www.kingcounty.gov/permits
Call 206-296-6600 for DDES customer service
206-296-6797 for permit application appointments
206-296-6659 for billing hotline
206-296-6696 for DDES records center
206-296-6680 for Code Enforcement
TTY 206-296-7217
E-mail DDESWebInquiries@kingcounty.gov
Note: For property-specific questions, please provide parcel ID or address if known.
Address Department of Development and Environmental Services (DDES)
900 Oakesdale Avenue SW
Renton, WA 98057-5212
Map & Directions www.kingcounty.gov/property/permits/about/ddesmap.aspx
Hours DDES Customer Service Center hours (exceptions noted under detailed services):

Monday 7:30 a.m. to 4:30 p.m.
Tuesday 7:30 a.m. to 4:30 p.m.
Wednesday 7:30 a.m. to 4:30 p.m.
Thursday 7:30 a.m. to 4:30 p.m.
Friday 7:30 a.m. to 11:30 a.m.

Also see Vashon - Maury Island office information