Karlstrom Associates
3completed ADU permits
3total ADU permits
2019–2020active years on record
$60,000median est. project cost
Washington state license
- License
- KARLSA*791D5
- Status
- license active
- Type
- CONSTRUCTION CONTRACTOR
- Expires
- 2027-04-01
- Registered in
- Bothell, WA
As reported by WA L&I on 2026-08-30. 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 |
|---|---|---|---|---|---|---|
| 6772636-CN | 2020-11-25 | Completed | $46,427 | 2843 NW 60TH ST | Remove existing non-conforming shed and reconstruct as detached accessory dwelling unit (DADU) at single family residence per plan. | |
| 6764259-CN | 2020-07-08 | Completed | $60,000 | 9126 49th AVE NE | Establish use for and construct alteration to existing attached garage to create an attached accessory dwelling unit (AADU) per plan. | |
| 6750896-CN | 2019-12-09 | Completed | $85,817 | 408 NW 45TH ST | Construct alterations to create an attached accessory dwelling unit (AADU) to an existing single family residence in the basement per plan. |
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