Tangent Construction Inc.
ADU builder in Seattle, WA · Licensed
1completed ADU permits
2total ADU permits
2007–2021years active on record
$194,492median est. project cost
Washington state license
- License
- TANGECI107C6
- Status
- Licensed
- Type
- CONSTRUCTION CONTRACTOR
- Expires
- 2027-07-15
- 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 |
|---|---|---|---|---|---|---|
| 6757125-CN | Seattle | 2021-08-03 | Expired | $194,492 | 13044 39TH AVE NE | Construct addition and substantial alterations to existing garage to create a detached accessory dwelling unit (DADU) to existing single family residence per plan. |
| 6153660-CN | Seattle | 2007-10-08 | Completed | $39,195 | 4833 53RD AVE S | Alteration to establish ADU in basement of existing single family residence per plan. |
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