O'CONNELL J J

Based in Crestline, California, O'Connell J J is a licensed contractor experienced in ADU construction and development. They hold an active B - General Building license (#711327) verified through California Contractors State License Board (CSLB). With over 30 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 (818) 414 5333 or request a free consultation online.