Backyard ADU LLC
ADU builder in Seattle, WA · Licensed
1completed ADU permits
1total ADU permits
2025year active on record
$189,854median est. project cost
Washington state license
- License
- BACKYAL786JM
- Status
- Licensed
- Type
- CONSTRUCTION CONTRACTOR
- Expires
- 2028-04-14
- Registered in
- Gig Harbor, WA
As reported by WA L&I on 2026-10-13. 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.
| Permit | City | Issued | Status | Est. cost | Address | Description |
|---|---|---|---|---|---|---|
| 7068512-CN | Seattle | 2025-04-15 | Completed | $189,854 | 6530 B 18TH AVE SW | Allow new detached accessory dwelling unit to existing single-family use per land use code. Construct east one family dwelling per plan. Existing detached garage to be removed. |
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