CLEAN SWEEP THE operating as a sole owner is licensed in California under CSLB number 549745. The license was first issued in 1988, putting the business at 38 years on the active CSLB roster. It carries a single CSLB classification: C-61/D-34 — Prefabricated Equipment Contractor. Records show an active surety bond on file with WESTERN SURETY COMPANY and an exempt workers' compensation status (no employees on payroll). The business is based in KNIGHTSEN, in Contra Costa County, California.