ADU Regulations in Sacramento, California (2026)

Regulations at a glance

Local rules & notes

Shelf Ready ADUs: The County provides a selection of pre-approved detached ADU plans ranging from 460 to 1,184 square feet to streamline the design process. Height Bonus for Increased Setbacks: Detached ADUs can reach 20 feet in height if they maintain a 10-foot rear setback and 5-foot side interior setbacks. Small Unit Parking Waiver: A specific local waiver exists for new construction detached ADUs that are 800 square feet or less, independent of transit proximity.

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

Frequently asked questions about ADU regulations in Sacramento

• What is the maximum ADU size in Sacramento, California?

  In Sacramento, 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; Sacramento may follow state defaults or have local limits. Verify with Sacramento planning for your specific lot.

• What are the setback requirements for ADUs in Sacramento?

  In Sacramento, 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 Sacramento planning for overlay zones or design standards that could affect your site.

• What is the maximum height for an ADU in Sacramento?

  In Sacramento, 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 Sacramento or county planning for your zone.

• Is ADU approval ministerial in Sacramento?

  In Sacramento, 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; Sacramento planning can confirm the exact process.

• Are there parking requirements for ADUs in Sacramento?

  In Sacramento, 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 Sacramento planning for your address.