ALLISON-SIERRA INC operating as a corporation is licensed in California under CSLB number 507261. The license was first issued in 1987, putting the business at 39 years on the active CSLB roster. It carries 2 CSLB classifications: A General Engineering Contractor and C-57 Well Drilling Contractor. Records show an active surety bond on file with NATIONWIDE MUTUAL INSURANCE COMPANY and active workers' compensation coverage from ACE AMERICAN INSURANCE COMPANY. The business is based in MARIPOSA, in Mariposa County, California.