YTJ Construction in Chula Vista has operated as a general contractor since 2003, handling kitchen and bathroom remodels, room additions, ADU builds, and new residential construction from its Mace Street base in the 91911 corridor. Kitchen renovations include custom cabinetry, countertop templating, and tile backsplash installation, with floor-to-ceiling tile work sourced through specialists such as Seaside Tile Inc on high-detail projects. The company also manages owner-builder projects, coordinating trade schedules, permit documentation, and inspection timelines for homeowners who hold their own B-classification licenses. ADU construction — from detached backyard units to garage conversions — requires dedicated HVAC systems, and the heating and cooling installation on those builds is coordinated with licensed C-20 contractors such as PROPER HVAC INC. The most complex scope involves full ground-up two-story residential builds with engineered truss packages, Title 24 energy-compliance documentation, and multi-trade inspections across foundation, framing, mechanical, and final occupancy stages.