Updated: Jun 14, 2026
Location
Address
10 SYOSSET LANE, Novato, CA, 94947
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William Warren Allen Plumber
William Warren Allen at 10 SYOSSET LANE, Novato, CA 94947, held a Plumber license (#459171) with the California contractors license board with an expiration date of 07-31-2004. We last verified the license was expired on 06-13-2026.
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 bidding system to be easily matched to qualified, licensed professionals in your area.
William Warren Allen Services
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William Warren Allen Contact Information
Phone Number: (415) 897-4657
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Address: 10 SYOSSET LANE, Novato, CA 94947
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William Warren Allen License info
Inactive License
| License # | 459171 |
| 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. If this is your business, please update your license status.
Check this license's status for William Warren Allen at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
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- *No active license on file. If you are William Warren Allen, click “This is My Business” to update your information.
Bonded
| Bonded Agent | This License Filed A Contractor's Bond With |
| Bond Value | $5,000 |
William Warren Allen Employees
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William Warren Allen
Sole Owner