ADU Regulations in Santa Clarita, California (2026)

Regulations at a glance

Local rules & notes

High Fire Hazard Severity Zone Access: Properties in high fire zones must have specific highway access configurations to be eligible for an ADU. Oak Tree Protection: Development is restricted if oak trees are present on the property, requiring a specific city clearance. Transit-Oriented Height Bonus: Detached ADUs near transit are granted additional height to accommodate specific roof pitches.

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

Frequently asked questions about ADU regulations in Santa Clarita

• What is the maximum ADU size in Santa Clarita, California?

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

• What are the setback requirements for ADUs in Santa Clarita?

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

• What is the maximum height for an ADU in Santa Clarita?

  In Santa Clarita, 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 Santa Clarita or county planning for your zone.

• Is ADU approval ministerial in Santa Clarita?

  In Santa Clarita, 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; Santa Clarita planning can confirm the exact process.

• Are there parking requirements for ADUs in Santa Clarita?

  In Santa Clarita, 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 Santa Clarita planning for your address.