ADU Regulations in Marina, California (2026)

Regulations at a glance

Local rules & notes

Pre-1970 Structural Assessment: Any ADU conversion of an existing structure built prior to 1970 requires a formal structural assessment in accordance with ASCE 41-13. Coastal Zone Parking Override: The city identifies specific 'Mandatory Parking Areas' (AMPA) in the Coastal Zone where state-level parking waivers do not apply, requiring one off-street space. Fire Hazard Prohibition: ADUs are generally prohibited in Very High Fire Hazard Severity Zones to ensure emergency egress, though JADUs and state-mandated 'subdivision (e)' units are exempt.

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

Frequently asked questions about ADU regulations in Marina

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

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

• What are the setback requirements for ADUs in Marina?

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

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

  In Marina, 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 Marina or county planning for your zone.

• Is ADU approval ministerial in Marina?

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

• Are there parking requirements for ADUs in Marina?

  In Marina, 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 Marina planning for your address.