Los Angeles, CA
Los Angeles ADU Rules & Requirements (2026)
Check LA's ADU setbacks, height limits, parking, JADU eligibility, and 60-day statutory review timeline.
Los Angeles, California ADU Rules
By-right approval available
Max Size
1,200 sq ft (detached); up to 50% of primary dwelling (attached)
Setbacks
4 ft rear/side; front setback matches zone (state minimums under AB 68)
Height Limit
16 ft (single-story); 18 ft within 0.5 mi of transit; 25 ft on multi-family lot with deed-restricted main unit
Parking
None required within 0.5 mi of transit; otherwise 1 space per unit
Owner-Occupancy
Not required (AB 68 prohibits owner-occupancy requirement)
JADU Eligibility
Yes. 500 sq ft max, within existing residence. Owner-occupancy still required for JADUs.
Review Type
Ministerial (by-right). 60-day approval requirement under state law.
Approval Timeline
60 days statutorily; LADBS typically issues permits in 60–90 days.
Short-Term Rentals
Prohibited on ADUs (most common)
Local note: LA has a Standard Plan Program offering pre-approved ADU designs that skip architectural review. Hillside lots trigger additional grading and slope-stability review.
Source: City zoning codes and state ADU statutes (CA AB 68/976, OR HB 2001, CO HB24-1152), updated April 2026.
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Los Angeles ADU rules at a glance
Los Angeles enforces California's statewide ADU framework through its Citywide ADU Ordinance and LADBS permit process. Detached ADUs up to 1,200 sq ft are allowed by-right on virtually all single-family and multi-family lots, with a 4-foot side and rear setback and a 16-foot height limit (18 feet within a half-mile of a major transit stop, 25 feet on multi-family sites with a deed-restricted main unit).
Parking minimums are waived within half a mile of transit, which covers most of the urbanized basin. Owner-occupancy is preempted by AB 68 and AB 976, so homeowners can rent the primary home and the ADU simultaneously. Ministerial review means LADBS cannot deny a compliant application based on neighborhood aesthetics or public opposition — the 60-day state clock runs from the date your application is deemed complete.
Standard Plan Program
LA's Standard Plan Program publishes a catalog of pre-approved ADU designs across multiple architects. Picking one of these plans removes the architectural review step, cutting plan review to about 30 days and reducing design soft costs by $10,000–$25,000. If you're sequencing for speed, the Standard Plan route is typically the fastest path to permit.
Hillside lots and special overlays
LA's Hillside Ordinance triggers extra grading, slope-stability, and fire-access review for ADUs on slopes above 15%. Coastal overlay zones, Historic Preservation Zones (HPOZs), and Very High Fire Hazard Severity Zones each layer on additional requirements, but state law still preempts owner-occupancy, parking-minimum, and setback rules more restrictive than the state floor.
What LA does not allow
LA prohibits short-term rental use on ADUs under its Home-Sharing Ordinance — ADUs must be leased for 30 days or longer. Sale-separation of an ADU from the primary parcel is only allowed under narrow affordability programs.
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