THOMAS RONALD R operating as a sole owner is licensed in California under CSLB number 648280. The license was first issued in 1992, putting the business at 34 years on the active CSLB roster. It carries a single CSLB classification: A — General Engineering Contractor. Records show an active surety bond on file with AMERICAN CONTRACTORS INDEMNITY COMPANY and an exempt workers' compensation status (no employees on payroll). The business is based in SAN MATEO, in San Mateo County, California.