CALCO GRADING INC operating as a corporation is licensed in California under CSLB number 1047667. The license was first issued in 2018, putting the business at 8 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 MERCHANTS BONDING COMPANY (MUTUAL) and active workers' compensation coverage from STATE COMPENSATION INSURANCE FUND. The business is based in RANCHO PALOS VERDES, in Los Angeles County, California.