Updated: Apr 01, 2026
Location
Address
PO Box 448, Twisp, WA, 98856
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Howard William Sonnichsen Construction
Howard William Sonnichsen, Twisp, Po Box 448, Twisp, WA (Owned by: Howard Sonnichsen) holds a Construction Contractor, General license and 1 other license according to the Tukwila license board.
Their BuildZoom score of 94 ranks in the top 24% of 128,670 Washington licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring Howard William Sonnichsen, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
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Howard William Sonnichsen Contact Information
Phone Number: (509) 449-2729
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Address: PO Box 448, Twisp, WA 98856
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Verified License
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Howard William Sonnichsen License info
License Not Verified
| License # | HOWARWS807BN |
| Status | Active |
| City | Tukwila |
| Type | Construction Contractor, General |
| Class | Individual |
| Business Type | Individual |
- When BuildZoom last verified this license, it had an expiration date of January, 2026. Check the current license status of Howard William Sonnichsen with the The City of Tukwila, WA
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | HOWARWS807BN |
| Status | Active |
| State | Washington |
| Type | Construction Contractor, Construction Contractor |
| Business Type | Individual |
- BuildZoom verified this license was active as of March 2026.
Verify this license's status for Howard William Sonnichsen at the Washington State Department of Labor & Industries.
This is a sample of licensing data; click here to access a complete history.
94
BuildZoom Score
Insured
| Insurer | Contractors Bonding & Insuranc |
| Insured up to | $500,000 |
Bonded
| Bonded Agent | Lexon Ins Co |
| Bond Value | $12,000 |
Howard William Sonnichsen Employees
HS
Howard Sonnichsen
Owner
SW
Sonnichsen, Howard William
Owner