ADU Regulations in Palmdale, California (2026)

Regulations at a glance

Local rules & notes

Illegal 'Existing Structure' Age Limit: The city attempted to limit ADU conversions to structures built at least two years prior to the application, which HCD ruled is more restrictive than state law. 150 Sq. Ft. Ingress/Egress Expansion: The city cannot block second-floor ADUs based on a lack of exterior stairs; state law allows an expansion of up to 150 sq. ft. to provide access. ADU and JADU Conjunction Error: The city's ordinance incorrectly suggested a choice between an ADU or a JADU, whereas state law allows both on a single lot.

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

Frequently asked questions about ADU regulations in Palmdale

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

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

• What are the setback requirements for ADUs in Palmdale?

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

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

  In Palmdale, 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 Palmdale or county planning for your zone.

• Is ADU approval ministerial in Palmdale?

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

• Are there parking requirements for ADUs in Palmdale?

  In Palmdale, 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 Palmdale planning for your address.