JOHN WILLIAM VONK JR

John William Vonk JR is a licensed contractor serving Apple Valley, California, specializing in accessory dwelling units (ADUs). They hold an active B - General Building license (#376806) verified through California Contractors State License Board (CSLB). With over 46 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 (760) 964 4082 or request a free consultation online.