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Permitting services are available online via this website and For details, see our Customer Service Bulletin.

2018 new building codes

Starting February 1, 2021 the Washington State’s 2018 International Building Codes became effective. All permit applications received and deemed complete on or after that date shall comply with those codes. For information about future training and purchasing codebooks, see the Washington Association of Building Officials website.

  • International Building Code
  • International Residential Code
  • International Fire Code
  • International Mechanical Code
  • International Existing Building Code
  • International Property Maintenance Code
  • International Existing Building Code
  • International Swimming Pool and Spa Code
  • 2015 Washington State Building Code
More information regarding these codes can be found on the following sites:

International Building Codes

Washington State Building Codes

King County Code

Sprinkler system

If property owners are preparing to submit building plans for a residential building permit, you need to determine if there is a need to install an automatic fire sprinkler system. A separate permit is required before installing a sprinkler system.

Fuel tanks

  • For information on fuel tank installing, relocating, or decommissioning, see Fuel Tanks
  • Apply for a fuel tank installation, relocation or decommission permit on

Department of Local Services, Permitting Division
35030 SE Douglas Street, Suite 210
Snoqualmie, WA  98065-9266

Our staff members are working remotely. Permitting services are available on this website and For details, see our Customer Service Bulletin.

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To reach customer service, call 206-296-6600 during the following hours: 9-11 a.m. and 12:30-2:30 p.m., Mon, Tues, Thurs, Fri.