ADU Regulations in Buena Park, California (2026)

Regulations at a glance

Local rules & notes

Illegal Front Setback Restrictions: The City ordinance attempts to prohibit ADUs in the front yard unless 'physically infeasible' elsewhere. HCD explicitly states this violates state law if it prevents the construction of an 800 sq ft unit with 4-foot setbacks. Illegal Unit Combination Limits: The City limits single-family lots to only one type of ADU option. HCD clarifies that state law allows for a combination: one JADU/converted unit AND one detached new construction ADU. Missing Multifamily Allowances (SB 1211): The City ordinance fails to reflect new 2025 state laws allowing up to 8 detached ADUs on lots with existing multifamily dwellings. Zoning Nonconformity Denial: The City ordinance implies ADUs are only allowed on conforming lots. HCD mandates that the city cannot deny permits due to correction of nonconforming zoning conditions.

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

Frequently asked questions about ADU regulations in Buena Park

• What is the maximum ADU size in Buena Park, California?

  In Buena Park, the maximum ADU size is typically 800 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; Buena Park may follow state defaults or have local limits. Verify with Buena Park planning for your specific lot.

• What are the setback requirements for ADUs in Buena Park?

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

• What is the maximum height for an ADU in Buena Park?

  In Buena Park, 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 Buena Park or county planning for your zone.

• Is ADU approval ministerial in Buena Park?

  In Buena Park, 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; Buena Park planning can confirm the exact process.

• Are there parking requirements for ADUs in Buena Park?

  In Buena Park, parking for ADUs is generally Often waived per state law; check local ordinance. California law often waives parking for ADUs within a half-mile of transit or in certain historic districts. Check with Buena Park planning for your address.