Johnson Brothers Construction
ADU builder in Seattle, WA · Licensed
1completed ADU permits
1total ADU permits
2015year active on record
$80,000median est. project cost
Washington state license
- License
- JOHNSBC075DU
- Status
- Licensed
- Type
- CONSTRUCTION CONTRACTOR
- Expires
- 2028-03-31
- Registered in
- SEATTLE, 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 |
|---|---|---|---|---|---|---|
| 6461706-CN | Seattle | 2015-07-07 | Completed | $80,000 | 5534 30TH AVE NE | Construct alterations to basement of existing single family residence for accessory dwelling unit per plan. |
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