DUARTE WILLIAM operating as a sole owner is licensed in California under CSLB number 1099006. The license was first issued in 2022, putting the business at 4 years on the active CSLB roster. It carries a single CSLB classification: C-20 — HVAC Contractor. Records show an active surety bond on file with ARCH INSURANCE COMPANY and active workers' compensation coverage from HARTFORD CASUALTY INSURANCE COMPANY. The business is based in SAN FRANCISCO, in San Francisco County, California.