John General Contractor ADU on Bonita Road specializes in accessory dwelling unit design and construction for homeowners in the 91902 corridor near Bonita Golf Club and Sweetwater Road. ADU slab-on-grade builds require underground plumbing rough-in before the concrete pour, a phase that connects to the new-construction pipe work provided by Primo Plumbing across the Bonita and Chula Vista service area. Projects range from detached backyard units and garage conversions to attached junior ADUs, each requiring separate utility meters, independent HVAC systems, and California Title 24 energy-compliance documentation through the Chula Vista permitting office. The firm navigates Chula Vista's ADU-specific setback requirements, lot-coverage maximums, and height limits under California Government Code sections 65852.2 and 65852.22, handling plan submittal through certificate of occupancy. Detached ADU framing packages include roof-system coordination with subcontractors experienced in composition-shingle and standing-seam metal installation, a specialty scope shared by Florentino Family Roofing & Remodeling on residential new-construction in Bonita. Highest-complexity ADU builds involve two-story detached structures with engineered-truss roof systems, seismic hold-down connections per CBC Section 2308, and 200-amp subpanel installations serving independent kitchen, laundry, and bathroom circuits.