This directory holds four roofing listings for Mercer Island, Washington. None of them has a Google rating matched to it yet, so what follows is contact detail rather than reputation data.
All of them are recorded in King County. Roofing permits and inspections are issued locally rather than by the state, so a re-roof in Mercer Island goes through King County or the municipality's own building department, whichever holds jurisdiction at the property.
Hiring a roofer in Mercer Island: what this page knows
Washington does not license roofers; it requires them to register with the state, and that registration covers work in Mercer Island. The Washington roofing license rules explain what a registration number does and does not tell you.
Washington's peak severe-weather season: November–March. The Washington storm center lists any National Weather Service alert active right now.
We have not modeled a cost index for Mercer Island. The national baseline puts a full roof replacement at $5,625–$27,000 and a repair at $250–$3,500; local labor, permit fees and access move both.
All Listings in Mercer Island
4 listings
Licensing for roofers working in Mercer Island
Washington does not license roofing contractors. It requires them to register with the Washington State Department of Labor & Industries, and that requirement covers work in Mercer Island.
Registration and licensure are not the same thing — a registration number records that a business completed a filing, and it sits alongside, not instead of, a permit and an inspection through King County or the city.
Source: Washington State Department of Labor & Industries. Checked August 2026. Licensing rules change — verify before you sign anything.
What roofing work costs
We have not modeled a cost index for Mercer Island, so there is no Mercer Island figure here. These are the national baseline bands, unadjusted.
National reference bands, not quotes and not local numbers. Local labor rates, permit fees and access all move them.
All roofing cost guidesOther King County towns with listings
Same county, same inspections department, same code — these are the other King County places this directory has roofers for.
Work out the job before you call
Roofing in Mercer Island, WA: questions answered from the data
How many roofing contractors are listed in Mercer Island, WA?
4 roofing listings are recorded at Mercer Island, Washington addresses in this directory. The count is read from the directory's own database each time this page is rebuilt; a listing is a location record, and the list above shows one card per company.
Does Washington require a roofing license?
No — it requires registration instead. Washington does not license roofers; it requires them to register with the state, and that registration covers work in Mercer Island. The Washington roofing license rules explain what a registration number does and does not tell you. You can check a credential on the Washington authority's own site.
How much does a roof replacement cost in Mercer Island?
We have not modeled a cost index for Mercer Island. The national baseline puts a full roof replacement at $5,625–$27,000 and a repair at $250–$3,500; local labor, permit fees and access move both. Nobody has priced your roof from this page; the only number worth planning around is a written quote from a contractor who has been on it.
When is storm season in Mercer Island?
Washington's peak severe-weather season: November–March. The Washington storm center lists any National Weather Service alert active right now. Season boundaries are National Weather Service climatology for the state, not a forecast for any one property.
Which county handles roofing permits in Mercer Island?
Every listing on this page is recorded in King County. Roofing permits and inspections are issued locally rather than by the state, so a re-roof in Mercer Island goes through the county or the municipality's own building department, whichever holds jurisdiction at the property.