ADU Builder Index

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Frost Construction

1completed ADU permits
1total ADU permits
—–—active years on record
$470,000median est. project cost

Washington state license

License
FROSTC*926LT
Status
license expired
Type
CONSTRUCTION CONTRACTOR
Expires
2022-06-12
Registered in
LEWISTON, WA

As reported by WA L&I on 2026-08-30. Always re-verify at lni.wa.gov/verify.

Permit record

Every ADU-related permit in covered city records naming this contractor. Links go to each city's official permit portal.

PermitCityIssuedStatusEst. costAddressDescription
6718477-EXCompleted$470,0002441 28TH AVE WEstablish use as single family residence and construct one family dwelling with an accessory dwelling unit per plans.

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