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California HOME Act

California HOME Act
California State Legislature
Full nameCalifornia Housing Opportunity and More Efficiency Act
IntroducedDecember 7, 2020
Assembly votedAugust 26, 2021
Senate votedAugust 30, 2021
Signed into lawSeptember 16, 2021
Sponsor(s)Sens. Toni Atkins, Anna Caballero, Susan Rubio, Scott Wiener, Dave Cortese, Lena Gonzalez, Mike McGuire; Assems. Robert A. Rivas, Buffy Wicks
GovernorGavin Newsom
CodeGovernment Code
Section66452.6, 66411.7, 65852.21
ResolutionSB 9
Websitehttps://leginfo.legislature.ca.gov/faces/billTextClient.xhtml?bill_id=202120220SB9
Status: Current legislation

2021 California Senate Bill 9 (SB 9),[1] titled the California Housing Opportunity and More Efficiency (HOME) Act, is a 2021 California state law which creates a legal process by which owners of certain single-family homes in single-family zoned areas may build or split homes on their property, and prohibits all cities and counties from directly interfering with those who wish to build such homes.

Initially, the law allowed property owners to either build two 800-square-foot homes or one duplex on their property, to result in a maximum of four housing units on a formerly single-family lot. The law has since been amended to, among other things, allow for the construction of up to eight detached ADUs on a single real property.

The bill was crafted to reduce the cost of housing in California by increasing housing supply and density within California cities and overriding municipal and county zoning laws requiring single-family zoning. The law also expands the capacity for secondary suites (also known in California as Accessory Dwelling Units - ADU's).

  1. ^ "Bill Text - SB-9 Housing development: approvals". leginfo.legislature.ca.gov. Retrieved July 12, 2023.

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