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.
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.
Web | www.kingcounty.gov/permits |
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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 |
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 |