Duff & Sons INC, B General Building Contractor in Mammoth Lakes, CA
Duff & Sons INC operating as a corporation holds an active California contractor license (CSLB #1063434), valid through Feb 29, 2028. First issued in 2020, the license has been on the CSLB roster for 6 years. It carries 2 CSLB classifications: B General Building Contractor and C-10 Electrical 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 Mammoth Lakes, in Mono County, California.
- License Number
- 1063434
- Issued
- Feb 18, 2020
- Status
- CLEAR
- Expires
- Feb 29, 2028
- Entity
- Corporation
- Surety
- American Contractors Indemnity Company
- Bond Number
- 100740955
- Effective
- Apr 12, 2023
- Status
- Active
- Coverage
- Exempt
- Carrier
- —
- Policy Number
- —
- Effective
- Apr 2, 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 Duff & Sons INC licensed in California?
Yes. Duff & Sons INC holds California Contractors State License Board license number 1063434, which is active and in good standing. The license was first issued on February 18, 2020. It is valid through February 29, 2028.
What does Duff & Sons INC specialize in?
Duff & Sons INC is licensed for 2 CSLB classifications: B General Building Contractor and C-10 Electrical Contractor.
Where is Duff & Sons INC headquartered?
Duff & Sons INC is headquartered at P O Box 1387, Mammoth Lakes, CA 93546, in Mono County, California.
Does Duff & Sons INC have an active surety bond on file with CSLB?
Yes. Duff & Sons INC has an active California contractor surety bond filed with American Contractors Indemnity Company.
Does Duff & Sons INC carry workers' compensation coverage?
Duff & Sons INC reports an exempt workers' compensation status, meaning the business has no employees on payroll.
How do I verify Duff & Sons INC's contractor license?
You can verify Duff & Sons INC's license directly with the California Contractors State License Board at https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/LicenseDetail.aspx?LicNum=1063434.
- License issuedFeb 18, 2020
- Bond activeApr 12, 2023
- WC coverage startsApr 2, 2026
- License expiresFeb 29, 2028
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