Citadel Development
ADU builder in Seattle, WA · Licensed
2completed ADU permits
2total ADU permits
2021–2023years active on record
$862,910median est. project cost
Washington state license
- License
- CITADDI069PC
- Status
- Licensed
- Type
- CONSTRUCTION CONTRACTOR
- Expires
- 2028-02-09
- Registered in
- WOODINVILLE, 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 |
|---|---|---|---|---|---|---|
| 6692771-CN | Seattle | 2023-06-13 | Completed | $501,348 | 5613 32ND AVE SW | Establish use and Construct new single-family residence with detached accessory dwelling unit (DADU) per plan. |
| 6749279-CN | Seattle | 2021-08-30 | Completed | $862,910 | 8308 25TH AVE NW | Establish use and Construct single-family residence with attached accessory dwelling unit [AADU] and detached accessory dwelling unit [DADU] per plan. |
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