DRT GRADING INC operating as a corporation is licensed in California under CSLB number 409436. The license was first issued in 1981, putting the business at 45 years on the active CSLB roster. It carries a single CSLB classification: C-12 — Earthwork and Paving Contractor. Records show an active surety bond on file with AMERICAN CONTRACTORS INDEMNITY COMPANY and active workers' compensation coverage from INSURANCE COMPANY OF THE WEST. The business is based in CHINO HILLS, in San Bernardino County, California.