ADU Rules in Compton.
Local ADU regulations, permit fees, setback requirements, and typical timelines for Compton. Last updated 2026-05-27.
Compton ADU Requirements
Attached ADU: up to 25 ft
Metro A (Blue) and C (Green) Lines serve Compton.
Design 4 weeks · Permit 5 weeks · Build 36 weeks
Plain-language summary
In Compton, a detached ADU requires a minimum 4-foot side setback and 4-foot rear setback. The maximum height for a detached ADU is 16 feet, while an attached ADU may be up to 25 feet. The maximum size for a detached ADU is 1,200 sq ft; a Junior ADU (JADU) is limited to 500 sq ft. Replacement parking is not required for most projects. Typical permit fees range from $5,000 to $10,000. A typical project takes approximately ~10 months from design start to move-in, including 4 weeks of design, 5 weeks for permit review, and 36 weeks of construction.
⚠️ ADU rules change frequently. Always verify current requirements with the Compton Building & Safety Department before submitting plans. Official source →
What to Watch Out For
- Compton follows state ADU law with no additional local restrictions beyond state minimums.
- Flat lot patterns throughout the city offer good ADU potential.
How Long Does It Take to Get an ADU Permit in Compton?
Site study, floor plans, elevations, structural drawings.
Plan check, corrections, and permit issuance by Compton Building & Safety.
Foundation, framing, MEP rough-in, finishes, final inspection.
A licensed engineer on your lot, free.
30 minutes. We walk the property, figure out what's feasible, and answer any questions you have.
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