STATE LAWS

LAWS THAT GOVERN ADUs IN CALIFORNIA

Government Code Section 65852.150

  • Among other things, allows ADUs in zones that allow single-family and multifamily uses provides additional rental housing and is an essential component in addressing California housing needs.

Effective January 1, 2021

  • Laws that further reduced barriers, streamlined the approval process, and expanded capacity to accommodate the development of ADUs and JADUs.

AB 345: https://leginfo.legislature.ca.gov/faces/billNavClient.xhtml?bill_id=202120220AB345

AB 3182: https://leginfo.legislature.ca.gov/faces/billNavClient.xhtml?bill_id=201920200AB3182

AB 68: https://leginfo.legislature.ca.gov/faces/billNavClient.xhtml?bill_id=201920200AB68

AB 881: https://leginfo.legislature.ca.gov/faces/billNavClient.xhtml?bill_id=201920200AB881

SB 13: https://leginfo.legislature.ca.gov/faces/billNavClient.xhtml?bill_id=201920200SB13

AB 587: https://leginfo.legislature.ca.gov/faces/billTextClient.xhtml?bill_id=201920200AB587

AB 670: https://leginfo.legislature.ca.gov/faces/billNavClient.xhtml?bill_id=201920200AB670

AB 671: https://leginfo.legislature.ca.gov/faces/billNavClient.xhtml?bill_id=201920200AB671

Effective January 1, 2022

SB 9: https://legiscan.com/CA/text/SB9/2021

  • SB 9 allows homeowners to create up to four homes on an existing parcel, in effect, eliminating single-family-only zoning. Crucially, the law allows the owner to “split” their lot, which makes it easier to sell or finance additional homes on a single parcel.

Effective January 1, 2023

  • Laws that made changes to the statewide regulatory standards that apply to ADUs including height allowances for two-story ADUs and clarification of building permit issuance processes.

SB 897: https://leginfo.legislature.ca.gov/faces/billNavClient.xhtml?bill_id=202120220SB897

AB 2221: https://leginfo.legislature.ca.gov/faces/billTextClient.xhtml?bill_id=202120220AB2221

AB 916: https://leginfo.legislature.ca.gov/faces/billTextClient.xhtml?bill_id=202120220AB916

AB 157: https://leginfo.legislature.ca.gov/faces/billStatusClient.xhtml?bill_id=202120220AB157

AB 561: https://leginfo.legislature.ca.gov/faces/billTextClient.xhtml?bill_id=202120220AB561