Underwood William Construction
Verified against CSLB on · View on CSLB
License details
- License number
- 686123
- Status
- Active
- Classifications
- B · General Building
- Contractor bond
- $25,000
- Workers' comp
- Covered
- License term on file
- March 26, 1994 – March 31, 2028
Business
- (707) 664 9415 (CSLB public record)
- 357 EAST SCHOOL STREET, Cotati, CA 94931Sonoma County
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Frequently asked questions
Is Underwood William Construction licensed in California?
Yes. Underwood William Construction holds an active California state contractor license (CSLB #686123), verified against the CSLB public record on June 17, 2026.
What is Underwood William Construction's CSLB license number?
Underwood William Construction's California contractor license number is 686123. You can verify it directly on the CSLB website: https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/LicenseDetail.aspx?LicNum=686123
What kind of work is Underwood William Construction licensed for?
Underwood William Construction is classified under General Building (B) by the CSLB.
How do I verify Underwood William Construction's license myself?
Look up license #686123 with the CSLB "Check a License" tool at https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/LicenseDetail.aspx?LicNum=686123. This page reflects the CSLB public record as of June 17, 2026.
See an error in this record? Report incorrect information. Status reflects CSLB data as of the date shown above.