California Senate Bill 684 (SB 684) is a 2023 California statute which requires cities to ministerially allow property owners to subdivide multifamily lots to create subdivisions with up to 10 houses, townhouses or condos in multi-family-zoned areas.
[1] The law amended the 1974 Subdivision Map Act to streamline approvals for more housing on a single parcel of land.
The law requires that eligible housing projects must protect existing housing that: The law also limits the period for cities and counties to approve or deny an application under the law to 60 days, with applications being deemed approved after the period's expiration unless the local government makes a finding related to the development’s compliance with certain requirements or the development’s specific, adverse public health or safety impact.
The law, drafted by Anna Caballero, was originally written to apply to single-family zones of housing, but the language regarding single-family zones was removed by the Assembly Housing Committee prior to passing the Assembly.
[5][6] The bill, also drafted by Caballero, was signed into law by Newsom on September 19, 2024, and will take effect on July 1, 2025.