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9611 SE 36th Street
Mercer Island, WA 98040
Phone: 206.275.7605
Fax: 206.275.7726
Email: midsg@mercergov.or. . .
Hours:

Open to the public:
8:30 AM - 5:00 PM
on Mon, Tue, Thu, & Fri

10:30 AM - 5:00 PM on Wed


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Code Information

Codes, Design Criteria & Research

*The 2015 Construction Codes were adopted by the City in July, 2016. Click here for a list of significant changes to the current Codes*

Construction Codes: The following is a list of the various construction codes which have been adopted and amended by the State of Washington and the City of Mercer Island:

  • 2012 International Building Code with statewide and City amendments
  • ICC/ANSI A117.1-09, Accessible and Usable Buildings and Facilities, with statewide and City amendments 2012 International Residential Code with statewide and City amendments
  • 2012 International Mechanical Code with statewide and City amendments
  • 2011 Liquefied Petroleum Gas Code (NFPA 58)
  • 2012 National Fuel Gas Code (NFPA 54) for LP gas
  • 2012 International Fuel Gas Code with statewide and City amendments
  • 2012 International Fire Code with statewide and City amendments
  • Washington State Energy Code
  • Washington Cities Electrical Code

Washington State Amendments to the Construction Codes

City Amendments to the Construction Codes (Click here): This link is to the Construction Code Amendments within Mercer Island Municipal Code which include amendments such as:

  • When fire sprinklers are required (for larger buildings, for poor water supply, for poor fire access roads, etc)
  • Administrative provisions (when permits are required, permit expiration and renewal, etc)
  • Electrical code amendments
  • Waterfront Structures
  • When special inspections are required (exterior insulation finish systems, etc)
  • Adopted appendices (pool and spas, fire access roads, etc)

Design Criteria: Information regarding minimum design criteria for Snow Loads, Wind & Seismic forces, Climatic and Geographic, etc.

Wind speed-up (Kzt) and Exposure Map:City map depicting Wind Exposure Classification and Minimum Kzt factors that will not require the submittal of justifying engineering calculations.

Geologic Hazard Area Maps and Regulations: Development within Geologic Hazard Areas requires supporting Geotechnical Reports.

Helpful Maps

  • NW Maps: Aerial photos, zoning, King County assessment, lot and building information, demographics, housing, topography, etc.
  • NWProperty.net: Information source for commercial property for sale or lease.
  • GeoMapNW: Past Geotechnical Reports / Explorations

Helpful information about state regulations that may apply to your project:

Helpful information about City regulations that may apply to your project:






Download File
AdultFamilyHomePermitRequirements.pdf

(434.4KB)
 

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