California density playbook
SB-1211
Detached ADUs on multi-family parcels
Allows up to eight detached ADUs on existing multi-family properties — a dramatic expansion over prior limits.
In plain English
What it actually does.
SB-1211 (in effect January 2025) expanded detached ADU rights on multi-family lots from a flat two to as many as eight, scaled by existing unit count. For owners of small apartment buildings, this is the single largest density unlock in years.
How it applies
On the ground, by city.
01 / City
Los Angeles
Eligible across R-2+.
02 / City
Beverly Hills
Coastal-adjacent parcels require additional review.
03 / City
Long Beach
Strong fit for older 4–8 unit buildings.
Keep reading
Other laws in the playbook.
Run the numbers
See what SB-1211 unlocks on your lot.
Drop in your address, lot size, and zoning. The calculator returns a unit count, the pathway, and the warnings worth knowing.
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