Updated: May 28, 2026
Location
Address
PO Box 1849, Sonoma, CA, 95476
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Koeppel Plumbing
Koeppel Plumbing at PO Box 1849, Sonoma, CA 95476, held a Plumber license (#436132) with the California contractors license board with an expiration date of 08-31-2028. We last verified the license was inactive on 05-27-2026.
Their BuildZoom score is 0 because we haven’t been able to verify an active license. As a result, they’re not ranked in the top 50% of 336,931 California contractors.
If you’re thinking about hiring them, we recommend double-checking their license status with your local licensing authority. Alternatively, use our project planner to be easily matched to qualified, licensed professionals in your area.
Koeppel Plumbing Contact Information
Phone Number: (707) 227-8816
Address: PO Box 1849, Sonoma, CA 95476
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Koeppel Plumbing License info
Inactive License
| License # | 436132 |
| Status | Inactive |
| State | California |
| Type | Plumbing |
| Business Type | Sole Ownership |
- According to the California Contractors State License Board, the status of this license was at one point cancelled. However, this information may have changed.
Check this license's status for Koeppel Plumbing at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
ALERT*
BuildZoom Score
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- *No active license on file. If you are Koeppel Plumbing, log in and update your license info in the “Edit Profile” tab.
Bonded
| Bonded Agent | American Contractors Indemnity Company |
| Bond Value | $15,000 |
Koeppel Plumbing Employees
WK
William Timothy Koeppel
Sole Owner