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Permitting Authorities / City of Mercer Island - Community Planning and Development, Building

Do you need a permit to replace a roof in Mercer Island, WA?

Adopted code

City of Mercer Island - Community Planning and Development, Building

The City of Mercer Island Community Planning and Development Department, through its Building team at 9611 SE 36th Street, reviews construction projects and handles building permits for one- and two-family homes in Mercer Island. The Washington State Building Code, which includes the 2021 International Residential Code, applies in Mercer Island as it does in every Washington city. This listing covers the office's contact details and the rules state law sets for every Washington town; it does not cover Mercer Island's own permit rules.

Jurisdiction
City of Mercer Island, Washington
Jurisdiction type
city
Address
9611 SE 36th Street, Mercer Island, WA 98040
Contact
  • url: https://www.mercerisland.gov/cpd/page/building
  • phone: 206-275-7605
Contractor registration required
Required
Adopted code
The 2021 International Residential Code, as adopted and amended by the State Building Code Council in chapter 51-51 of the Washington Administrative Code. WAC 51-51-003 adopts "The 2021 edition of the International Residential Code as published by the International Code Council" by reference "with the following additions, deletions, and exceptions," and WAC 51-51-008 says it "shall become effective in all counties and cities of this state on March 15, 2024." State law makes this code mandatory everywhere: "there shall be in effect in all counties and cities the state building code" (RCW 19.27.031(1)), which "shall be enforced by the counties and cities" (RCW 19.27.050). The State's changes to Chapter 9, Roof Assemblies, consist of one section on secondary roof drains and overflow scuppers (WAC 51-51-0903, Section R903.4.1). A city or county may amend the state code, but "the amendments shall not result in a code that is less than the minimum performance standards and objectives contained in the state building code," and "no amendment ... that affects single-family or multifamily residential buildings shall be effective unless the amendment is approved by the building code council" (RCW 19.27.060(1) and (1)(a)). Amendments to administrative provisions need not be submitted for that approval if they "do not alter the construction requirements" (WAC 51-04-030(4), Exception). This record did not read this city's own amendments to the state code. Everything above is Washington state law, the same in every city. In Mercer Island the Community Planning and Development Department's Building team, which includes the Building Official, plans examiners and building inspectors, reviews construction projects for compliance with the adopted codes, as the city's own page says.

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Sources

Roofing questions: Mercer Island, WA

Do roofing contractors need a license or registration in Mercer Island, WA?

Yes.

What building code does Mercer Island, WA use?

The 2021 International Residential Code, as adopted and amended by the State Building Code Council in chapter 51-51 of the Washington Administrative Code. WAC 51-51-003 adopts "The 2021 edition of the International Residential Code as published by the International Code Council" by reference "with the following additions, deletions, and exceptions," and WAC 51-51-008 says it "shall become effective in all counties and cities of this state on March 15, 2024." State law makes this code mandatory everywhere: "there shall be in effect in all counties and cities the state building code" (RCW 19.27.031(1)), which "shall be enforced by the counties and cities" (RCW 19.27.050). The State's changes to Chapter 9, Roof Assemblies, consist of one section on secondary roof drains and overflow scuppers (WAC 51-51-0903, Section R903.4.1). A city or county may amend the state code, but "the amendments shall not result in a code that is less than the minimum performance standards and objectives contained in the state building code," and "no amendment ... that affects single-family or multifamily residential buildings shall be effective unless the amendment is approved by the building code council" (RCW 19.27.060(1) and (1)(a)). Amendments to administrative provisions need not be submitted for that approval if they "do not alter the construction requirements" (WAC 51-04-030(4), Exception). This record did not read this city's own amendments to the state code. Everything above is Washington state law, the same in every city. In Mercer Island the Community Planning and Development Department's Building team, which includes the Building Official, plans examiners and building inspectors, reviews construction projects for compliance with the adopted codes, as the city's own page says.