ADU Regulations in Yuba County, California (2026)

Regulations at a glance

Local rules & notes

Administrative Use Permit for Large ADUs: Unlike many jurisdictions that hard-cap ADU size at 1,200 sqft, Yuba County allows homeowners to apply for a permit to exceed this limit. Free Permit-Ready ADU Floor Plans: The County provides eight complete sets of pre-approved construction drawings at no cost to residents to encourage development. Solar Panel Exemption for Conversions: Solar panels are only required for newly constructed detached ADUs; conversions and additions are exempt.

For the official ordinance and latest updates, check your city or county planning department.

Frequently asked questions about ADU regulations in Yuba County

• What is the maximum ADU size in Yuba County, California?

  In Yuba County, the maximum ADU size is typically 1200 square feet, depending on whether the unit is attached or detached. California state law allows up to 1,200 sq ft for detached ADUs and 800 sq ft for attached in many jurisdictions; Yuba County may follow state defaults or have local limits. Verify with Yuba County planning for your specific lot.

• What are the setback requirements for ADUs in Yuba County?

  In Yuba County, typical setback requirements are 4 feet from the side property line and 4 feet from the rear. These may be reduced to 4 feet under California Government Code § 65852.2 where applicable. Check with Yuba County planning for overlay zones or design standards that could affect your site.

• What is the maximum height for an ADU in Yuba County?

  In Yuba County, the maximum height for an ADU is generally 16 feet. State law often allows up to 16 feet for detached ADUs and up to 25 feet when within 4 feet of the property line in some cases. Confirm with Yuba County or county planning for your zone.

• Is ADU approval ministerial in Yuba County?

  In Yuba County, ADU approval is typically Ministerial (by-right) per Gov Code §65852.2. Ministerial (by-right) review means the city must approve qualifying applications without discretionary review, per California Gov Code § 65852.2. Your project must still meet objective standards; Yuba County planning can confirm the exact process.

• Are there parking requirements for ADUs in Yuba County?

  In Yuba County, parking for ADUs is generally true. California law often waives parking for ADUs within a half-mile of transit or in certain historic districts. Check with Yuba County planning for your address.