Chula Vista ADU Zoning Rules & Permit Guide

ADU Regulations in Chula Vista, California

Updated September 29, 2026

In southern San Diego County, Chula Vista follows California's statewide ADU framework under AB 68. The city's coastal location and proximity to the border influence specific design and lot coverage considerations.

Below is a summary of the key zoning rules applicable to Accessory Dwelling Units in Chula Vista as of 2026. Regulations are governed by California's AB 68 (2020), AB 881 (2021), and AB 3182 (2024) which together establish a statewide ADU framework.

Additional Local Requirements for Chula Vista

• ADU by right in residential zones
• Minimum 150 sq ft
• Height limit: 16 ft for detached

Frequently Asked Questions About ADUs in Chula Vista

Can I build an ADU in Chula Vista?

This California city follows the statewide AB 68 framework. Most single-family lots qualify for by-right ADU development.

What is the maximum ADU size allowed in Chula Vista?

ADUs in Chula Vista can be up to 1,200 square feet, subject to the property's zoning and lot coverage limits. Always confirm the exact allowed size with the Chula Vista planning department before designing your project.

What are the setback requirements for an ADU in Chula Vista?

ADUs in Chula Vista generally require setbacks of 4 ft rear, 4 ft side. California state law (AB 68) limits local setback requirements to 4 feet for existing structures, but always verify with local zoning.