Johnny General Contractor ADU operates from Del Cerro Boulevard in Del Cerro, one of San Diego's hillside residential pockets where single-family lot sizes and R-1 zoning make accessory dwelling units a strong fit for multigenerational housing. The firm handles ADU projects from initial site evaluation through San Diego Development Services Department permitting and final inspection, managing foundation work, framing, mechanical rough-ins, and interior finishes under a single scope. ADU construction in the 92120 ZIP often requires grading analysis because Del Cerro lots slope toward the canyon edges east of SDSU, and the company's project plans account for retaining walls, stepped foundations, and drainage routing that meet current California Building Code Title 24 energy requirements. Architectural site plans for these builds typically route through residential design firms in the area, and Schall Architects in Allied Gardens is one of the drafting offices whose ADU drawings feed into the contractor's build schedule. Detached ADU builds on Del Cerro properties typically range from 400 to 1,200 square feet, with the contractor coordinating structural engineering, electrical panel upgrades, and sewer lateral connections that the city requires before issuing a certificate of occupancy. General contracting work at this address also extends to full-home remodeling, kitchen and bathroom renovations, and room additions for the mid-century ranch homes that line Del Cerro Boulevard and the surrounding streets off College Avenue. Electrical panel upgrades on ADU projects in Del Cerro frequently require 200-amp service installations, and the contractor coordinates that subcontracted phase with SRP Electric Inc. on the Grantville side of Fairmount Avenue. The 6378 Del Cerro Blvd address sits less than two miles northeast of the SDSU campus, placing the contractor within the zone where ADU rental demand draws from both university staff seeking proximity to campus and retirees downsizing into smaller units on family properties.