ADU Regulations in Apple Valley, California (2026)

Regulations at a glance

Local rules & notes

Generous 'Whichever is Greater' Size Clause: For both attached and detached ADUs, the maximum size is defined as 50% of the primary dwelling OR 1,200 sqft, whichever is greater. This is significantly more permissive than state law for attached units (usually capped at 50%). Open Space Requirement: The city imposes a specific open space requirement for ADUs, which is not a standard state requirement. Large Lot Size Bonus: Lots one acre or larger have a pathway to exceed the standard size limits via a Minor Development Permit.

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

Frequently asked questions about ADU regulations in Apple Valley

• What is the maximum ADU size in Apple Valley, California?

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

• What are the setback requirements for ADUs in Apple Valley?

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

• What is the maximum height for an ADU in Apple Valley?

  In Apple Valley, 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 Apple Valley or county planning for your zone.

• Is ADU approval ministerial in Apple Valley?

  In Apple Valley, 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; Apple Valley planning can confirm the exact process.

• Are there parking requirements for ADUs in Apple Valley?

  In Apple Valley, 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 Apple Valley planning for your address.