ADU Regulations in Morro Bay, California (2026)

Regulations at a glance

Local rules & notes

Coastal Parking Override: In specific coastal zones, the city overrides state parking exemptions, requiring 1 off-street space per ADU and replacement parking if a garage is converted. Short-Term Rental Prohibition: ADUs and JADUs are explicitly prohibited from being used as short-term vacation rentals. Director-Level CDP Review: ADUs are reviewed by the Director rather than the Planning Commission, and local public hearings are waived for these permits.

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

Frequently asked questions about ADU regulations in Morro Bay

• What is the maximum ADU size in Morro Bay, California?

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

• What are the setback requirements for ADUs in Morro Bay?

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

• What is the maximum height for an ADU in Morro Bay?

  In Morro Bay, 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 Morro Bay or county planning for your zone.

• Is ADU approval ministerial in Morro Bay?

  In Morro Bay, 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; Morro Bay planning can confirm the exact process.

• Are there parking requirements for ADUs in Morro Bay?

  In Morro Bay, 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 Morro Bay planning for your address.