STS Construction Services
ADU builder in Seattle, WA · Not matched
1completed ADU permits
1total ADU permits
2015year active on record
$100,000median 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.
| Permit | City | Issued | Status | Est. cost | Address | Description |
|---|---|---|---|---|---|---|
| 6462435-CN | Seattle | 2015-08-18 | Completed | $100,000 | 4759 51ST PL SW | Construct addition and alterations to existing single family residence including partial second floor deck and ADU (Accessory Dwelling Unit) over existing garage per plans. |
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