California SB 9 — Housing Opportunity and More Efficiency (HOME) Act (CA)
Tracked preemption from the California overlay bundle.
Overview
← All state preemptionsCalifornia overlay roll-upCalifornia zoning wikiCalifornia building codesFederal overlaysGlossaryFederal-conflict: Not flagged
Effective
2022-01-01
Sunset
—
Authority
state
Scope
state:CA
Other California preemptions
California SB 423 — Streamlined Multifamily ApprovalCalifornia AB 2011 — Affordable Housing and High Road Jobs ActCalifornia AB 2097 — Parking Mandate Elimination Near TransitCalifornia SB 10 — Local Upzoning AuthorizationCalifornia ADU / JADU By-RightCalifornia Builder's RemedyCalifornia Density Bonus Law
Primary-source summary
SB 9 — California Housing Opportunity and More Efficiency (HOME) Act (2022)Trigger predicate
When this evaluates true for a parcel, the law's preempted fields take precedence over base zoning.
AND
parcel.base_zone_category==res_sf- NOT
parcel.hazard_flags∈ {historic_district,fire_hazard_very_high,flood_zone_AE,coastal_zone,conservation_easement}
Preempted fields
4 fields on the base district schema are rewritten when the trigger fires.
| Field | Op | Value | Note |
|---|---|---|---|
base_districts[category=res_sf].max_units_per_lot | floor_at | 4 | Up to 4 units via lot split + duplex on each resulting lot |
base_districts[category=res_sf].min_setback_side_ft | cap_at | 4 | |
base_districts[category=res_sf].min_setback_rear_ft | cap_at | 4 | |
review_type | waive_discretionary | — |
Citation
Authority source
CA Government Code §66411.7 + §66411.8
Research notes
Lot-split prong requires 3-yr owner-occupancy. Duplex-without-split prong does not.