ADU Regulations in Compton, California (2026)

Regulations at a glance

Local rules & notes

CalHFA ADU Grant Program: Provides a grant of up to $40,000 to reimburse non-reoccurring pre-development costs (site prep, permits, impact fees, etc.) for low-to-moderate income homeowners. Rent Stabilization Ordinance (RSO) Partial Exemption: New ADUs are subject to 'Just Cause' eviction protections but are exempt from the rent increase caps (rent control) of the RSO. Standard Notes and Details Streamlining: The County offers pre-approved 'Standard Notes and Details' for existing single-story garage conversions, which can simplify the structural plan requirements.

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

Frequently asked questions about ADU regulations in Compton

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

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

• What are the setback requirements for ADUs in Compton?

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

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

  In Compton, the maximum height for an ADU is generally 25 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 Compton or county planning for your zone.

• Is ADU approval ministerial in Compton?

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

• Are there parking requirements for ADUs in Compton?

  In Compton, parking for ADUs is generally Often waived per state law; check local ordinance. California law often waives parking for ADUs within a half-mile of transit or in certain historic districts. Check with Compton planning for your address.