ADU Builder Index

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Darren P Patt

1completed ADU permits
1total ADU permits
2019–2019active years on record
$750,000median 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
6679619-CN2019-04-15Completed$750,0001406 37TH AVEConstruct substantial alterations and establish ADU in existing single family residence per plan.

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