JOHNSON STEEL SOURCE

Based in Altadena, California, Johnson Steel Source is a licensed contractor experienced in ADU construction and development. They hold an active B - General Building license (#797977) verified through California Contractors State License Board (CSLB). With over 24 years of experience, they bring deep expertise to every project. Their ADU services include detached ADU construction and garage conversions. They serve clients throughout Los Angeles County. Call (626) 797 6455 or request a free consultation online.