ADU Builder Index

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Andersen Construction

2completed ADU permits
2total ADU permits
2012–2012active years on record
$135,416median est. project cost

Washington state license

License
ANDERC*907DN
Status
license active
Type
CONSTRUCTION CONTRACTOR
Expires
2028-02-17
Registered in
Portland, 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
6302567-CN2012-05-17Completed$135,4162245 12TH AVE WSubstantial alteration & addition to existing north building to change use from duplex structure to single family dwelling with attached accessory dwelling unit per plan. (review and processing for 2 permits under 6302567)
6302567-EXCompleted2245 12TH AVE WException/Exemption Request for: Substantial alteration & addition to existing north building to change use from duplex structure to single family dwelling with attached accessory dwelling unit per plan. (review and processing for 2 permits under 6302567)

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