Duffy Construction, B General Building Contractor in Sonoma, CA
Duffy Construction operating as a sole owner holds an active California contractor license (CSLB #717952), valid through Jan 31, 2028. First issued in 1996, the license has been on the CSLB roster for 30 years. It carries a single CSLB classification: B — General Building Contractor. Records show an active surety bond on file with American Contractors Indemnity Company and an exempt workers' compensation status (no employees on payroll). The business is based in Sonoma, in Sonoma County, California.
- License Number
- 717952
- Issued
- Jan 23, 1996
- Status
- CLEAR
- Expires
- Jan 31, 2028
- Entity
- Sole Owner
- Surety
- American Contractors Indemnity Company
- Bond Number
- 101027765
- Effective
- Jan 19, 2026
- Status
- Active
- Coverage
- Exempt
- Carrier
- —
- Policy Number
- —
- Effective
- Jan 19, 2026
- Expires
- —
This contractor warrants a closer look before contracting:
- Workers' comp listed as exempt
An automated summary of public CSLB data, not a credit score, rating, or endorsement. How we determine this
Is Duffy Construction licensed in California?
Yes. Duffy Construction holds California Contractors State License Board license number 717952, which is active and in good standing. The license was first issued on January 23, 1996. It is valid through January 31, 2028.
What does Duffy Construction specialize in?
Duffy Construction is licensed for one CSLB classification: B General Building Contractor.
Where is Duffy Construction headquartered?
Duffy Construction is headquartered at 303 Buttercup Ct, Sonoma, CA 95476, in Sonoma County, California.
Does Duffy Construction have an active surety bond on file with CSLB?
Yes. Duffy Construction has an active California contractor surety bond filed with American Contractors Indemnity Company.
Does Duffy Construction carry workers' compensation coverage?
Duffy Construction reports an exempt workers' compensation status, meaning the business has no employees on payroll.
How do I verify Duffy Construction's contractor license?
You can verify Duffy Construction's license directly with the California Contractors State License Board at https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/LicenseDetail.aspx?LicNum=717952.
- License issuedJan 23, 1996
- Bond activeJan 19, 2026
- WC coverage startsJan 19, 2026
- License expiresJan 31, 2028
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