---
type: "Bill"
title: "Land use: accessory dwelling units."
description: "Existing law provides for the creation by local ordinance, or by ministerial approval if a local agency has not adopted an ordinance, of accessory dwelling units in areas zoned for single-family or multifamily dwelling residential use in accordance with specified standards and conditions. Existing law prohibits a local agency from issuing a certificate of occupancy for an accessory dwelling unit before the local agency issues a certificate of occupancy for the primary dwelling."
jurisdiction: "us/states/ca"
legislature: "California Legislature"
session: "20252026"
identifier: "AB 462"
citation: "California AB 462 (20252026)"
classification: ["bill"]
subjects: ["Landuse", "accessorydwellingunits"]
status: "enacted"
primary_sponsors: ["Lowenthal"]
version_count: 9
action_count: 27
vote_count: 9
first_action: "2025-02-06"
last_action: "2025-10-10"
source: "openstates"
source_identifier: "ocd-bill/6d98d58e-3155-4322-b7b1-44dcd8d7bc29"
source_url: "http://leginfo.legislature.ca.gov/faces/billNavClient.xhtml?bill_id=202520260AB462"
source_hash: "16a1fd77a204f6f8cf014e5ca1e56a2b5b75a9c61efab666696cf85778aa7519"
vintage: "2026-07-01"
source_snapshot: "https://data.openstates.org/daily/2026-07-01/public.pgdump"
retrieved_at: "2026-07-06"
confidence: "reported"
tags: ["legislation", "bill", "us-ca"]
---

# California AB 462 (20252026) — Land use: accessory dwelling units.

Existing law provides for the creation by local ordinance, or by ministerial approval if a local agency has not adopted an ordinance, of accessory dwelling units in areas zoned for single-family or multifamily dwelling residential use in accordance with specified standards and conditions. Existing law prohibits a local agency from issuing a certificate of occupancy for an accessory dwelling unit before the local agency issues a certificate of occupancy for the primary dwelling.

## Version chain

The bill's text revisions, in order — the diff chain from filing to enrollment.

1. **02/06/25 - Introduced** (filed) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=202520260AB462&version=20250AB46299INT)
2. **02/27/25 - Amended Assembly** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=202520260AB462&version=20250AB46298AMD)
3. **05/13/25 - Amended Senate** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=202520260AB462&version=20250AB46297AMD)
4. **07/10/25 - Amended Senate** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=202520260AB462&version=20250AB46296AMD)
5. **07/17/25 - Amended Senate** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=202520260AB462&version=20250AB46295AMD)
6. **08/29/25 - Amended Senate** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=202520260AB462&version=20250AB46294AMD)
7. **10/10/25 - Chaptered** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=202520260AB462&version=20250AB46292CHP)
8. **AB462** (committee substitute) — [source](http://leginfo.legislature.ca.gov/faces/billNavClient.xhtml?bill_id=202520260AB462)
9. **09/16/25 - Enrolled** (enrolled) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=202520260AB462&version=20250AB46293ENR)

## Votes

- AB 462 Lowenthal Concurrence in Senate Amendments — **79–0** (pass) · lower
- Do pass as amended — **7–0** (pass) · upper
- Do pass. — **15–0** (pass) · lower
- Do pass as amended, but first amend, and re-refer to the Committee on [Appropriations] — **10–0** (pass) · upper
- Do pass and be re-referred to the Committee on [Appropriations] — **11–0** (pass) · lower
- AB 462 Lowenthal Third Reading Urgency — **77–0** (pass) · lower
- Do pass as amended, but first amend, and re-refer to the Committee on [Housing] — **7–0** (pass) · upper
- 3rd Reading AB462 Lowenthal et al. By Grayson Urgency Clause — **39–0** (pass) · upper
- Placed on suspense file — **7–0** (pass) · upper

## Sponsors

- Lowenthal — primary (person)
- Rivas — author (person)
- Wicks — coauthor (person)

## Timeline

The legislative action history — every referral, reading, and vote.

- **2025-02-06** Read first time. To print. `reading-1`
- **2025-02-07** From printer. May be heard in committee March 9.
- **2025-02-18** Referred to Com. on H. & C.D. `referral-committee`
- **2025-02-27** From committee chair, with author's amendments: Amend, and re-refer to Com. on H. & C.D. Read second time and amended. `amendment-introduction, amendment-passage, reading-1, reading-2`
- **2025-02-28** Re-referred to Com. on H. & C.D. `referral-committee`
- **2025-03-12** From committee: Do pass and re-refer to Com. on APPR. (Ayes 11. Noes 0.) (March 12). Re-referred to Com. on APPR. `committee-passage, committee-passage-favorable, referral-committee`
- **2025-03-19** Coauthors revised.
- **2025-03-19** From committee: Do pass. (Ayes 15. Noes 0.) (March 19). `committee-passage, committee-passage-favorable`
- **2025-03-20** Read second time. Ordered to third reading. `reading-1, reading-2`
- **2025-04-01** Read third time. Urgency clause adopted. Passed. Ordered to the Senate. (Ayes 77. Noes 0. Page 955.). `passage, reading-1, reading-3`
- **2025-04-02** In Senate. Read first time. To Com. on RLS. for assignment. `reading-1`
- **2025-04-23** Re-referred to Coms. on N.R. & W. and HOUSING. `referral-committee`
- **2025-05-13** From committee chair, with author's amendments: Amend, and re-refer to committee. Read second time, amended, and re-referred to Com. on N.R. & W. `amendment-introduction, amendment-passage, reading-1, reading-2, referral-committee`
- **2025-07-09** From committee: Amend, and do pass as amended and re-refer to Com. on HOUSING. (Ayes 7. Noes 0.) (July 8). `amendment-introduction, amendment-passage, committee-passage, referral-committee`
- **2025-07-10** Read second time and amended. Re-referred to Com. on HOUSING. `amendment-passage, reading-1, reading-2, referral-committee`
- **2025-07-16** From committee: Amend, and do pass as amended and re-refer to Com. on APPR. (Ayes 10. Noes 0.) (July 15). `amendment-introduction, amendment-passage, committee-passage, referral-committee`
- **2025-07-17** Read second time and amended. Re-referred to Com. on APPR. `amendment-passage, reading-1, reading-2, referral-committee`
- **2025-08-18** In committee: Referred to suspense file. `referral-committee`
- **2025-08-29** From committee: Amend, and do pass as amended. (Ayes 7. Noes 0.) (August 29). `amendment-introduction, amendment-passage, committee-passage`
- **2025-08-29** Read second time and amended. Ordered returned to second reading. `amendment-passage, reading-1, reading-2`
- **2025-09-02** Read second time. Ordered to third reading. `reading-1, reading-2`
- **2025-09-11** Read third time. Urgency clause adopted. Passed. Ordered to the Assembly. (Ayes 39. Noes 0. Page 2916.). `passage, reading-1, reading-3`
- **2025-09-12** In Assembly. Concurrence in Senate amendments pending.
- **2025-09-12** Senate amendments concurred in. To Engrossing and Enrolling. (Ayes 79. Noes 0. Page 3375.). `amendment-passage, committee-passage-favorable`
- **2025-09-24** Enrolled and presented to the Governor at 3 p.m.
- **2025-10-10** Approved by the Governor. `executive-signature`
- **2025-10-10** Chaptered by Secretary of State - Chapter 491, Statutes of 2025. `became-law`

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/6d98d58e-3155-4322-b7b1-44dcd8d7bc29`. Confidence: reported (aggregated from official California legislature records).