ADU builders and rules in Chula Vista

Chula Vista ADU rules

Chula Vista no longer has its own ADU ordinance. The city's municipal code lists section 19.58.022 (accessory dwelling units) as repealed by Ordinance 3592 in 2025, and the code's legislative history shows the same ordinance repealing section 19.58.023 (junior ADUs), dated April 15, 2025. A Planning Commission resolution from early 2025 said the two sections were out of step with SB 1211, a state ADU law that took effect January 1, 2025.

So the Chula Vista ADU requirements that matter are California's: how many units you can build, size, height, setbacks, parking and the permit clock all come from state law. Our guide to California ADU laws covers them, and our junior ADU guide covers the 500 sq ft unit inside the house.

Two local items still shape your project. First, soils. The city's soils report waiver form says expansive or compressible soil is found throughout Chula Vista, so a soils investigation report is required for all projects. The Building Official may waive it for a one-story detached ADU if a California-registered civil or geotechnical engineer certifies that the site is on cut or natural grade, not fill. Second, the coast: Snap ADU, a builder, notes that ADUs in the city's coastal zone may be subject to the Bayfront Local Coastal Program. Ask the city whether your lot is in it.

Chula Vista pre-approved ADU plans

Chula Vista calls its pre-approved ADU plans “City Standard ADU Plans.” The city's ADU page says it worked with the design firm SnapADU to offer 12 options: six sizes, each with a flipped floor plan.

• Extra paperwork. To use the plans, you sign a City Standard ADU Plan Affidavit and a Hold Harmless Agreement, according to SANDAG's summary of the region's programs.
• Faster review. State law requires a city to approve or deny a detached ADU application that uses a pre-approved plan within 30 days of a complete application.
• Check the code cycle. Snap ADU, which says it won the design job in a competitive bid, wrote in April 2026 that the city had not budgeted to update its public plan library, so the publicly posted plans were not permit-ready under the new building code cycle. Ask the city which version it will accept before you build on one.

The plans still need site-specific sheets, Title 24 energy calculations and usually a soils report. For more choices, including the County's free plans, see our pre-approved ADU plans guide for San Diego and ADU floor plans.

Chula Vista ADU fees

Building permit, plan check and utility fees are separate, and the city didn't publish a total ADU fee estimate we could find. Ask Development Services for one on your plans. A 600 sq ft detached ADU, for example, would pay no city impact fees but would owe about $3,228 in school fees at the rates above ($5.38 per sq ft combined), if both districts serve your address. Confirm which school districts cover your lot. For build costs, see what an ADU costs in San Diego, or run the ADU cost calculator. Planning to rent the unit? See ADU rental income in San Diego.

Getting a Chula Vista ADU permit

Chula Vista ADU permits go through Development Services. The city's ADU page is the starting point for forms and the standard plans. Snap ADU reports that since December 13, 2024 the city has required digital submission of plans. Include the soils report, or the engineer-certified waiver request, with your first submittal.

Before you sign a contract, read how to hire an ADU contractor and check a contractor's license. Chula Vista ADU builders are listed above, and you can compare verified ADU builders in San Diego County.

Common questions