A 1 CONSTRUCTION CO

A 1 Construction CO is a verified ADU contractor serving the Phelan, California area. They hold an active B - General Building license (#701232) verified through California Contractors State License Board (CSLB). With over 31 years of experience, they bring deep expertise to every project. Their ADU services include detached ADU construction and garage conversions. They serve clients throughout San Bernardino County. Call (714) 797 9000 or request a free consultation online.