ADU Regulations in Cerritos, California (2026)

Regulations at a glance

Local rules & notes

Pre-Approved ADU Plans (AB 1332): Local agencies must develop a program for the preapproval of ADU plans by January 1, 2025, and must post these plans and contact info on their website. Separate Conveyance (AB 1033): State law authorizes (but does not require) local agencies to adopt ordinances allowing ADUs to be sold separately from the primary dwelling as condominiums. Unpermitted Unit Amnesty (AB 2533): Local agencies cannot deny permits for unpermitted ADUs built before Jan 1, 2020, solely for non-compliance with building standards, unless there is a health/safety threat. SB 543 Impact Fee Clarification (2026 Addendum): Revises impact fee rules to explicitly reference 'interior livable space' for the 750 sq ft threshold.

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

Frequently asked questions about ADU regulations in Cerritos

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

  In Cerritos, the maximum ADU size is typically NaN 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; Cerritos may follow state defaults or have local limits. Verify with Cerritos planning for your specific lot.

• What are the setback requirements for ADUs in Cerritos?

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

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

  In Cerritos, 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 Cerritos or county planning for your zone.

• Is ADU approval ministerial in Cerritos?

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

• Are there parking requirements for ADUs in Cerritos?

  In Cerritos, parking for ADUs is generally 1. California law often waives parking for ADUs within a half-mile of transit or in certain historic districts. Check with Cerritos planning for your address.