Senate Bill (SB) 9 (Chapter 162, Statutes of 2021) requires ministerial approval of a housing development with no more than two primary units in a single-family zone, the subdivision of a parcel in a single-family zone into two parcels, or both.

Please see our SB-9 Checklist, PDS-600 for complete requirements for properties located within the County of San Diego. The full text from Senate Bill 9 can be found by clicking here. Additionally, we have created an interactive SB-9 webpage that provides you with the filters and layers to determine if your property qualifies for SB-9 or not.

Senate Bill 9 (SB 9) is a new California State Law taking effect January 1, 2022. SB 9 changes existing limits on how many homes can be built on a lot zoned as single-family.

The State of California passed SB9 as one of a set of measures to address the housing crisis in California. Since 2022, SB 9 has facilitated the construction of additional units on parcels zoned for single-family residential use, streamlining and simplifying the process.

S 9– Second Unit Development W/O Lot Split Establishment of Units • Properties zoned for single-family use ONLY (AR, E1, RHE, E4, RE, R1, RS) • Properties shall be located in an urbanized area or cluster, as

SB 9 makes two important changes to state law: It allows two homes to be built on each of those lots, with the effect of legalizing fourplexes in areas that previously only allowed one home. SB 9 contains important protections against the displacement of existing tenants.

SB 9 prevents profiteers from evicting or displacing tenants by excluding properties where a tenant has resided in the past three years. Establishes a maximum number of units. Recent amendments clarify that this bill would allow no more than four units on what is currently a single-family parcel. Preserves historic neighborhoods.

2024年12月2日 · SB 9 (2025) clarifies that previous legislation exempting ADUs from owner-occupancy requirements applies to all ADUs, not just newly-built ones.

2012年8月21日 · What is SB9? SB9 added Government Code sections 65852.21, 66411.7 and amends Government Code Section 66452.6 SB9 has two major components, it requires ministerial (by right) approval of: •Two-unit developments on a single-family zoned parcel •Splitting a single-family zoned parcel into two (2) new parcels (Urban Lot Split)

SB 9 provides for the subdivision of an existing lot into two new parcels in the Single-Family Zones. This is called an Urban Lot Split, and requires owner occupancy. Urban lot splits may be combined with two-unit developments, ADUs and JADUs for the construction of up to two units on each new parcel resulting from the lot split.