ADU Permits: Carson vs Los Angeles
How do adu permits rules compare between Carson, CA and Los Angeles, CA?
Carson and Los Angeles have similar restriction levels.
Carson, CA
Los Angeles County
ADU applications in Carson are reviewed ministerially by the Community Development Department under CMC Article IX, Chapter 1. State law (Gov. Code §65852.2(b)) requires the city to approve or deny a complete application within 60 days without a public hearing.
View full Carson rules →Los Angeles, CA
Los Angeles County
Los Angeles processes ADU and JADU applications ministerially under LAMC Section 12.22 A.33 and California Government Code Section 65852.2. Applications go through LADBS plan check, with no public hearing, discretionary review, or CEQA process required.
View full Los Angeles rules →Key Facts Comparison
| Fact | Carson | Los Angeles |
|---|---|---|
| Permit issuer | Carson Community Development / Building & Safety | - |
| Review type | Ministerial (no hearing, no discretion) | - |
| Approval deadline | 60 days from complete application | - |
| Building code | 2022 CA Building Standards (Title 24 CCR) | - |
| Fire sprinklers | Not required if main dwelling lacks them | - |
| City Hall | 701 E. Carson St., Carson CA 90745 — (310) 830-7600 | - |
| Code Section | - | LAMC 12.22 A.33 |
| Review Type | - | Ministerial, no hearing |
| Decision Deadline | - | 60 days |
| Lead Agency | - | LADBS Plan Check |
| State Law | - | Cal. Gov Code 65852.2 |
Highlighted rows indicate differences between cities.
Carson FAQ
How long does Carson have to approve my ADU?
60 days from a complete application under Gov. Code §65852.2(b). If they miss the deadline, it is deemed approved.
Do I need a planning commission hearing?
No. State law requires ministerial approval — no hearings, no discretionary review.
Are fire sprinklers required for an ADU in Carson?
Only if the primary dwelling already has them. State law prohibits cities from requiring sprinklers in an ADU when the main house doesn't have them.
Los Angeles FAQ
Do I need a public hearing to build an ADU in Los Angeles?
No. Under LAMC 12.22 A.33 and Cal. Gov Code 65852.2, ADU applications are reviewed ministerially by LADBS without a public hearing, design review, or CEQA process.
How long does ADU plan check take in Los Angeles?
LADBS must approve or deny a complete application within 60 days of submission. Pre-approved Standard Plans further shorten plan check by skipping structural review.
Which Los Angeles departments review an ADU permit?
LADBS leads plan check, with sign-offs from City Planning, the Bureau of Engineering for sewer capacity, and LADWP for water and power service.
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