Building an ADU in Chula Vista
Permits are handled through the City of Chula Vista's Development Services. Bring your parcel number and any prior permits for the garage or rear structures, because unpermitted additions are common on older west-side lots and need to be sorted out before new work is approved.
If you live in Otay Ranch, Eastlake, Rolling Hills Ranch or another HOA community, your association cannot ban an ADU under California law, but it can apply reasonable architectural standards. Get the HOA's design guidelines early so the exterior matches what they will approve.
Newer east-side homes usually have a 200-amp electrical service and modern sewer lines, which helps. Older west-side homes may need a service upgrade or a new sewer lateral, and those items belong in the first estimate, not as surprises later.
What state law allows
California's ADU law applies across Chula Vista, including inside HOA communities. It allows one ADU plus one junior ADU on most single-family lots and gives the city 60 days to review a complete application that meets the rules.
- Converting a garage to an ADU generally does not require you to replace the lost parking spaces.
- Owner-occupancy is no longer required for a standard ADU. A junior ADU still requires the owner to live on the property.
- ADUs under 750 square feet are exempt from impact fees, and units of 500 square feet or less are generally exempt from school fees.
- Detached ADUs typically need only 4-foot side and rear setbacks.
Garage conversion or detached ADU in Chula Vista?
West of I-805, a detached garage on an older lot is the usual starting point. Converting it reuses the structure and is normally the lower-cost route, as long as the slab, framing and electrical service are up to it.
In the eastern communities garages are usually attached and yards are smaller. There the realistic choices are often an attached garage conversion or a junior ADU inside the house, with a detached unit only where the lot and the HOA guidelines leave room for one.
How an All Pro Contractor ADU project runs
- Site visit to review the garage or yard, access, utilities and the goals for the unit.
- Written estimate covering the scope discussed, with design, engineering and permit responsibilities spelled out.
- Plans and permit submittal, either through our design partners or with plans you already have.
- Construction: foundation or slab work, framing, utilities, insulation, drywall, finishes and final inspection.