ADU Builder Index

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Don Hannes Construction

1completed ADU permits
1total ADU permits
2018–2018active years on record
$81,404median est. project cost

Washington state license

No exact business-name match in the WA L&I registry — this builder may hold a license under a different legal name. Check the registry directly.

Permit record

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

PermitCityIssuedStatusEst. costAddressDescription
6632878-CN2018-06-18Completed$81,4047741 30TH AVE NWConstruct new detached accessory dwelling unit accessory to existing single-family residence garage to be removed per plan.

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