LIGTENBERG MARK operating as a sole owner is licensed in California under CSLB number 464429. The license was first issued in 1984, putting the business at 42 years on the active CSLB roster. It carries a single CSLB classification: C-10 — Electrical 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 ONTARIO, in San Bernardino County, California.