DUFFIN CONSTRUCTION operating as a sole owner is licensed in California under CSLB number 760636. The license was first issued in 1999, putting the business at 27 years on the active CSLB roster. It carries a single CSLB classification: B — General Building Contractor. Records show an active surety bond on file with HUDSON INSURANCE COMPANY and active workers' compensation coverage from STATE COMPENSATION INSURANCE FUND. The business is based in SAN FRANCISCO, in San Francisco County, California.