ADU Regulations in Greenfield, California (2026)

Regulations at a glance

Local rules & notes

Conditional Use Requirement: ADUs are not permitted by right in any district; they are listed as a Conditional Use requiring approval from the Board of Zoning Appeals. Primary Structure Setbacks Apply: Unlike most jurisdictions where ADUs follow accessory structure setbacks, Greenfield requires ADUs to meet the setbacks of the primary structure. Limit on Quantity: Only one detached accessory structure may be converted or built as an ADU per parcel.

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

Frequently asked questions about ADU regulations in Greenfield

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

  In Greenfield, the maximum ADU size is typically 850 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; Greenfield may follow state defaults or have local limits. Verify with Greenfield planning for your specific lot.

• What are the setback requirements for ADUs in Greenfield?

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

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

  In Greenfield, 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 Greenfield or county planning for your zone.

• Is ADU approval ministerial in Greenfield?

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

• Are there parking requirements for ADUs in Greenfield?

  In Greenfield, 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 Greenfield planning for your address.