Every California ADU and housing bill, in one place.
A running index of the Senate and Assembly bills that decide what a California lot can hold: ADU statutes, SB 1211, JADU rules, the 2026 process reforms, and the pathways coming to Parcy next. Updated as bills take effect.
Stay ahead of the next ADU bill.
New California housing bills, what they mean for your lot, and news from Parcy and Kaz Capital Group. A few emails a month.
Urban lot splits and duplexes on single-family lots, ministerially. Up to four homes where one stood.
Ministerial small-lot subdivisions of up to ten homes on multifamily-zoned lots under five acres.
Extends SB 684 to vacant single-family lots.
Up to eight detached ADUs on multifamily lots (one per existing unit), converted-space ADUs up to 25% of existing units, and no replacement parking for removed uncovered spaces.
The state ADU law, renumbered from § 65852.2 in 2024. One ADU and one JADU by right on single-family lots; 800 sq ft exemption; 4 ft setbacks; 60-day ministerial approval; no owner-occupancy.
Junior ADUs up to 500 sq ft inside the home, efficiency kitchen, shared bathroom allowed. AB 1154 (2026) limits owner-occupancy to shared-bath JADUs.
15-business-day completeness review with a deemed-complete rule, 800 sq ft measured as interior space, school fee exemption for units under 500 sq ft.
JADU owner-occupancy required only when the JADU shares a bathroom with the primary home.
60-day coastal development permits for ADUs in the Coastal Zone; detached ADU occupancy before the main home is rebuilt in disaster counties.
Permanently prohibits owner-occupancy requirements for ADUs.
Requires every city and county to publish pre-approved ADU plans and act on applications using them within 30 days.
No minimum parking requirements for residential projects, ADUs included, within a half mile of major transit.
Amnesty path to legalize ADUs and JADUs built before Jan 1, 2020; cities may deny only on health and safety grounds; fees waived.
Cities may allow ADUs to be sold separately from the main home as condominiums.
The 2020 ADU reform package: 60-day approvals, impact fee exemption under 750 sq ft, 4 ft setbacks, 800 sq ft exemption, two ADUs on multifamily lots, five-year owner-occupancy moratorium.
Raised ADU height limits to 18 ft near transit and on multifamily lots, 25 ft for attached ADUs; front setbacks cannot block the 800 sq ft unit; detached ADU allowed with a proposed home.
Transit-oriented upzoning: state-set heights and densities within a half mile of major transit stops in the largest counties.
CEQA exemption for qualifying infill housing projects, with SB 158 setting a 30-day final action deadline and a four-acre threshold.
Extra units, height, and reduced parking in exchange for affordable set-asides; the basis for Los Angeles ED1 100% affordable projects.
This index is informational and summarizes state law as we read it. Local ordinances add standards on top. Verify with your city's planning department and a licensed architect before relying on any provision.