ADU Regulations in Grover Beach, California (2026)

Regulations at a glance

Local rules & notes

Tiny Homes on Residential Lots: The city has a specific ordinance allowing Tiny Homes (moveable, DMV-registered) as a type of temporary dwelling unit accessory to a single-family dwelling. Max size 400 sq ft; must be located in the rear portion of the parcel. Zero Parking Requirement: Unlike many cities that default to state exemptions, Grover Beach explicitly sets the parking requirement for ADUs to 'None' in their parking table. Metal Siding Restriction: There is a specific design standard limiting the use of metal wall materials on new accessory structures.

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

Frequently asked questions about ADU regulations in Grover Beach

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

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

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

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

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

  In Grover 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 Grover Beach or county planning for your zone.

• Is ADU approval ministerial in Grover Beach?

  In Grover 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; Grover Beach planning can confirm the exact process.

• Are there parking requirements for ADUs in Grover Beach?

  In Grover 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 Grover Beach planning for your address.