TERRAFORM UNDERGROUND PC operating as a corporation is licensed in California under CSLB number 1144297. The license was first issued in 2025, putting the business at 1 year on the active CSLB roster. It carries a single CSLB classification: A — General Engineering Contractor. Records show an active surety bond on file with MERCHANTS BONDING COMPANY (MUTUAL) and active workers' compensation coverage from STATE COMPENSATION INSURANCE FUND. The business is based in DISCOVERY BAY, in Contra Costa County, California.