ADU Regulations in Compton, California
Los Angeles County · CA · Pop. 97,000
Max ADU Size
1,200
sq ft detached
Rear Setback
4 ft
Permit Timeline
60 days
Build Cost
$145,000 – $290,000
Zoning
Allowed ADU Types
State law preempts local owner-occupancy requirements. Compton's single-family neighborhoods contain many parcels with detached garages well-suited for conversion. One ADU plus one JADU permitted per single-family lot. Multifamily lots may allow ADUs per state law.
Source: City of Compton — Accessory Dwelling Units · Compton Municipal Code Title 10 (Zoning Ordinance)
Dimensions
Size & Setback Requirements
Detached
1,200
sq ft max
JADU
500
sq ft max
Attached
50% of primary home, max 1,200 sq ft
Setbacks
front
Same as primary dwelling
side
4 ft
rear
4 ft
Max height: 16 ft
Lot coverage: Per underlying zone
Compton lot sizes are typical of South Los Angeles — moderate dimensions with detached garages being a common feature. Garage conversions are the most common ADU type. Structures converting to ADUs retain existing setbacks, which is a major advantage in this urban environment.
Permitting
Permit Process
Department
City of Compton Planning Division
Review Timeline
60 days
Permit Fees
$7,000 – $13,500
Impact Fees
Impact fees waived for ADUs under 750 sq ft per state law
Required Documents
- ›Site plan
- ›Floor plans
- ›Elevations
- ›Title 24 energy compliance
- ›Structural drawings
- ›Asbestos/lead-based paint report (for structures built before 1980)
Compton follows state-mandated ministerial ADU approval. Older housing stock in Compton may require asbestos or lead paint assessment for garage conversions. LA County Fire Department review applies. The city's Planning Division is available to assist applicants through the process. Contact for current ADU fee schedule.
Visit City of Compton Planning Division →Infrastructure
Utilities & Requirements
Solar
Required
Parking
Not required
Separate Meter
Optional
Fire Sprinklers
See note
Financials
ADU Costs in Compton
Typical Build Cost
$145,000 – $290,000
Cost per Sq Ft
$200 – $260
Monthly Rental
$1,400 – $2,200/mo/mo
Property Value Added
Adds $155,000 – $285,000 to property value
Available Grants & Programs
- ★CalHFA ADU Grant Program available
- ★LA County ADU Accelerator Program (income-qualified)
- ★Community Development Block Grant (CDBG) programs may apply
Compton is experiencing rapid market transformation driven by its proximity to CalState Dominguez Hills, LAX, and SoFi Stadium. The surrounding employment base and improving infrastructure are increasing rental demand and property values. ADU investment in Compton offers significant upside potential as the market continues to evolve.
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Compton Quick Facts
- Max size1,200 sq ft
- Rear setback4 ft
- Permit timeline60 days
- Build cost$145,000 – $290,000
- Rental income$1,400 – $2,200/mo/mo
- Owner occupancyNot required
Official Source
City of Compton — Accessory Dwelling UnitsCompton Municipal Code Title 10 (Zoning Ordinance)
Last verified: March 14, 2026
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