Goncon Design & Build in Chula Vista is a full-service design-build general contractor handling kitchen and bathroom remodels, ADU construction, home additions, and structural restorations from its Anita June Court office in the 91911 corridor. Outdoor living additions pair hardscape patios with landscape integration, and drought-tolerant plant selections from Bonita Creek Nursery anchor the native and low-water plantings that complete backyard renovation scopes in the Bonita and Chula Vista markets. The design-build model consolidates architectural planning, permitting, and trade coordination under one contract, sequencing demolition, framing, plumbing, electrical, tile, and finish carpentry through a single project manager from first sketch to final punch list. Project budgets range from $20,000 single-room refreshes to $1,000,000-plus ground-up custom residences, with 3D rendering and architectural drawings produced in-house before any demolition begins. Mechanical system upgrades on gut renovations require HVAC sizing calculations and duct-layout coordination with subcontractors including PROPER HVAC INC, whose split-system and forced-air installations serve the heating and cooling loads in remodeled Chula Vista floor plans. Most complex engagements involve complete structural restorations after water or fire damage, requiring engineered shoring plans, selective demolition to preserve undamaged framing, and full mechanical/electrical/plumbing rebuild to current California Building Code Title 24 standards.