Hansen Bros. Enterprises Return to Directory Contact Orson Hansen Address P.O. Box 1599 City Grass Valley State CA ZIP Code 95945 Business Phone 1 530 273-3381 Business Fax 1 530 272-5401 Website www.hansenbrosent.com CSLB Number https://www2.cslb.ca.gov/OnlineServices/CheckLicenseII/LicenseDetail.aspx?LicNum=207705 Specialty Boring, Directional, Concrete, Aggregate & Ready Mix, Excavating, Commercial, Excavating, Residential, General Engineers, Commercial, General Engineers, Residential, Paving Contractors, Asphalt & Concrete, Rental Equipment, Rock, Sand & Gravel, Underground Utilities & Trenching