Accessory Structures in Lancaster, CA (2026)
5 verified accessory structures rules for Lancaster, California, sourced directly from the municipal code and official government pages.
Verified from official government sources
ADU Rules
Lancaster caps attached and detached ADUs at 850 square feet for a studio or one-bedroom unit and 1,200 square feet for two or more bedrooms, with a 25-foot front setback, 4-foot side and rear setbacks, and a height limit of 18 to 25 feet depending on ADU type.
Lancaster ADU Size, Height and Setback Rules
Some RestrictionsLancaster, CA, Municipal Code Sec. 17.41.016.A.3 (ADU and JADU development standards - Attached ADU on a Single-Family Lot)
Maximum Size. An attached ADU shall not exceed 850 square feet for a studio or one-bedroom unit and 1,200 square feet for a unit with 2 or more bedroom...c.Maximum Height. An attached ADU shall not exceed 25 feet in height. Notwithstanding the foregoing, ADUs shall not exceed 2 stories.d.Minimum Setbacks.1)Front-yard setback: 25 feet2)Side-yard setback: 4 feet3)Rear-yard setback: 4 feet
ADU Owner Occupancy
Lancaster requires at least one person holding legal or equitable title to reside on the property as their permanent residence once an ADU or JADU is built, though ADUs permitted between January 1, 2020 and January 1, 2025 are exempt unless the lot has both an ADU and a JADU.
Lancaster ADU Owner-Occupancy Requirement
Some RestrictionsLancaster, CA, Municipal Code Sec. 17.41.018.E (ADU and JADU requirements - Owner Occupancy)
Owner Occupancy. Except as specified in subsections 1 and 2, below, at least one person with legal or equitable title to the property on which an ADU or JADU is located must reside on that property as that person's legal domicile and permanent residence. The owner may reside in an ADU, JADU, or primary dwelling on the property.1.Any ADU that is permitted after January 1, 2020, but before Januar...
ADU Rental Restrictions
Lancaster bars renting any ADU or JADU for less than 30 days, a ban that applies no matter when the unit was created, and separately forbids selling or conveying an ADU or JADU apart from the main lot and primary dwelling.
Lancaster ADU Minimum 30-Day Rental Rule
Some RestrictionsLancaster, CA, Municipal Code Sec. 17.41.018.B-C (ADU and JADU requirements - Rental Term; No Separate Conveyance)
Rental Term. No ADU or JADU may be rented for a term that is shorter than 30 days. This prohibition applies regardless of when the ADU or JADU was created.C.No Separate Conveyance. An ADU or JADU may be rented. However, except as otherwise provided in Government Code Section 65852.26, no ADU or JADU may be sold or otherwise conveyed separately from the lot and the primary dwelling (in the case ...
Shed & Carport Rules
A backyard shed of 120 square feet or less can sit right on the interior or rear property line in Lancaster and rise up to 8 feet, while a bigger shed or gazebo needs a 5-foot setback and tops out at one story or 12 feet. Both must stay 6 feet from the main house, per Municipal Code Section 17.08.160.
Lancaster Shed and Accessory Structure Setbacks
Some RestrictionsLancaster, CA, Municipal Code Sec. 17.08.160 (Residential Accessory Uses and Structures)
The development criteria set forth in this section are intended to provide minimum standards for accessory buildings or structures. Accessory buildings and structures may only be constructed on a lot containing a main dwelling unit. Whenever there is a conflict between these standards and the city's building code, the most restrictive requirement shall apply. A. Standards for Residential Access...
Garage Conversions
Converting an attached garage into living space in Lancaster requires replacing the lost garage with 2 new off-street parking spaces on-site, keeping interior access to the house, and removing any street-facing garage door, under Municipal Code Section 17.08.220(B). The owner must also waive city liability in writing for any applicable deed restrictions and complete the work under permits and inspections.
Lancaster Garage Conversion Requirements
Some RestrictionsLancaster, CA, Municipal Code Sec. 17.08.220(B) (Garage conversions - Garage Conversions to Other Living Space)
B.Garage Conversions to Other Living Space. Garages serving and attached to existing single-family detached residences may be converted to expand the living area of such residences, provided that:1.The property owner, in writing, absolves the city of all liabilities regarding any deed restrictions that may be applicable to the property.2.The garage shall be replaced by 2 covered or uncovered, s...
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