EG Construction in Chula Vista's Eastlake area specializes in accessory dwelling unit construction, with over 200 ADU projects completed across San Diego County including detached units, attached additions, and garage conversions. ADU plumbing rough-in — separate drain-waste-vent stacks, water supply lines, and gas piping for standalone kitchens — demands coordination with plumbing contractors such as Solid Plumbing & Drains Inc before foundation pour. Operating from Fenton Street in the 91914 ZIP, the firm offers bilingual English and Spanish service and manages the full ADU development cycle from architectural design and engineering through City of Chula Vista permitting and final inspection. California Senate Bill 9 and Chula Vista's local ADU ordinance allow detached units up to 1,200 square feet on single-family lots, with reduced setback requirements that expand buildable footprints on standard 6,000-square-foot parcels. Electrical service for standalone ADUs requires a dedicated 200-amp sub-panel and separate meter base, work coordinated with electrical contractors such as Cano Electric for panel installation and utility-company coordination. Completed ADU projects include 337-square-foot garage-conversion studios with in-unit kitchenettes and two-bedroom, two-bathroom detached structures with independent HVAC, tankless water heaters, and fire-rated wall assemblies meeting California Building Code Chapter 7A requirements.