ADU Regulations in Paramount, California (2026)

Regulations at a glance

Local rules & notes

Illegal Garage Door Replacement Requirement: The city attempted to require that converted garages replace doors with matching exterior walls, which HCD flagged as an illegal development standard for conversion ADUs. Corner Lot Setback Overreach: The city tried to apply standard zoning setbacks to the street side of corner lots, but HCD clarified that the 4-foot state limit applies to all side lot lines, including street sides. Multifamily Conversion Size Exemption: Converted units created in detached accessory structures for multifamily properties are exempt from the city's 850/1000 sqft size limitations.

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

Frequently asked questions about ADU regulations in Paramount

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

  In Paramount, the maximum ADU size is typically 1000 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; Paramount may follow state defaults or have local limits. Verify with Paramount planning for your specific lot.

• What are the setback requirements for ADUs in Paramount?

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

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

  In Paramount, 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 Paramount or county planning for your zone.

• Is ADU approval ministerial in Paramount?

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

• Are there parking requirements for ADUs in Paramount?

  In Paramount, 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 Paramount planning for your address.