3 A PLUMBING operating as a sole owner is licensed in California under CSLB number 1104773. The license was first issued in 2023, putting the business at 3 years on the active CSLB roster. It carries a single CSLB classification: C-36 — Plumbing Contractor. Records show an active surety bond on file with PHILADELPHIA INDEMNITY INSURANCE COMPANY and an exempt workers' compensation status (no employees on payroll). The business is based in SAN BRUNO, in San Mateo County, California.