ADU Regulations in Manhattan Beach, California (2026)

Regulations at a glance

Local rules & notes

Coastal Zone Implementation Delay: Because Manhattan Beach is in the Coastal Zone, ADU ordinance updates (Chapter A.74) require Coastal Commission certification, which has been extended to potentially December 2026. Commercial Zone Residential Conversion: The city is expanding residential and mixed-use development rights into CL, CD, and CNE commercial zones as part of this housing element update. Lot Consolidation Incentives: The city is introducing specific incentives for lot consolidation to streamline multi-family housing development.

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

Frequently asked questions about ADU regulations in Manhattan Beach

• What is the maximum ADU size in Manhattan Beach, California?

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

• What are the setback requirements for ADUs in Manhattan Beach?

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

• What is the maximum height for an ADU in Manhattan Beach?

  In Manhattan Beach, 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 Manhattan Beach or county planning for your zone.

• Is ADU approval ministerial in Manhattan Beach?

  In Manhattan Beach, 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; Manhattan Beach planning can confirm the exact process.

• Are there parking requirements for ADUs in Manhattan Beach?

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