republic-os/legislation/us/states/ca/20212022/ab-1584.md

---
type: "Bill"
title: "Housing omnibus."
description: "(1) Existing law, the Planning and Zoning Law, authorizes a local agency to provide for the creation of accessory dwelling units in single-family and multifamily residential zones by ordinance, and sets forth standards the ordinance is required to impose with respect to certain matters, including, among others, maximum unit size, parking, and height standards. Existing law authorizes a local agency to provide by ordinance for the creation of junior accessory dwelling units, as defined, in single-family residential zones and requires the ordinance to include, among other things, standards for the creation of a junior accessory dwelling unit, required deed restrictions, and occupancy requirements."
jurisdiction: "us/states/ca"
legislature: "California Legislature"
session: "20212022"
identifier: "AB 1584"
citation: "California AB 1584 (20212022)"
classification: ["bill"]
subjects: ["Housing omnibus."]
status: "enacted"
primary_sponsors: ["Committee on Housing and Community Development"]
version_count: 7
action_count: 26
vote_count: 9
first_action: "2021-03-10"
last_action: "2021-09-28"
source: "openstates"
source_identifier: "ocd-bill/a83dc19b-d274-418b-85ca-a26ed1e8fced"
source_url: "http://leginfo.legislature.ca.gov/faces/billNavClient.xhtml?bill_id=202120220AB1584"
source_hash: "772ff8eda7a7f2612fca3ff7dc79bc99bc87c77afeaa76eb473e851a1ccb0ef1"
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 1584 (20212022) — Housing omnibus.

(1) Existing law, the Planning and Zoning Law, authorizes a local agency to provide for the creation of accessory dwelling units in single-family and multifamily residential zones by ordinance, and sets forth standards the ordinance is required to impose with respect to certain matters, including, among others, maximum unit size, parking, and height standards. Existing law authorizes a local agency to provide by ordinance for the creation of junior accessory dwelling units, as defined, in single-family residential zones and requires the ordinance to include, among other things, standards for the creation of a junior accessory dwelling unit, required deed restrictions, and occupancy requirements.

## Version chain

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

1. **03/10/21 - Introduced** (filed) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=202120220AB1584&version=20210AB158499INT)
2. **04/07/21 - Amended Assembly** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=202120220AB1584&version=20210AB158498AMD)
3. **06/30/21 - Amended Senate** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=202120220AB1584&version=20210AB158497AMD)
4. **09/03/21 - Amended Senate** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=202120220AB1584&version=20210AB158496AMD)
5. **09/28/21 - Chaptered** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=202120220AB1584&version=20210AB158494CHP)
6. **AB1584** (committee substitute) — [source](http://leginfo.legislature.ca.gov/faces/billNavClient.xhtml?bill_id=202120220AB1584)
7. **09/15/21 - Enrolled** (enrolled) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=202120220AB1584&version=20210AB158495ENR)

## Votes

- AB 1584 H. & C.D. Consent Calendar Second Day — **76–0** (pass) · lower
- Do pass, but first be re-referred to the Committee on [Judiciary] with the recommendation: To Consent Calendar — **9–0** (pass) · upper
- Do pass. To Consent Calendar. — **16–0** (pass) · lower
- AB 1584 H. & C.D. Concurrence in Senate Amendments By CHIU — **78–0** (pass) · lower
- 3rd Reading AB1584 H. & C.D. (Chiu) By Wiener — **38–0** (pass) · upper
- Do pass and be re-referred to the Committee on [Appropriations] with recommendation: To Consent Calendar — **8–0** (pass) · lower
- Do pass — **7–0** (pass) · upper
- Placed on suspense file — **7–0** (pass) · upper
- Do pass, but first be re-referred to the Committee on [Appropriations] with the recommendation: To Consent Calendar — **11–0** (pass) · upper

## Sponsors

- Committee on Housing and Community Development — primary (person)

## Timeline

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

- **2021-03-10** Read first time. To print. `reading-1`
- **2021-03-11** From printer. May be heard in committee April 10.
- **2021-03-18** Referred to Com. on H. & C.D. `referral-committee`
- **2021-04-07** 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`
- **2021-04-08** Re-referred to Com. on H. & C.D. `referral-committee`
- **2021-05-03** From committee: Do pass and re-refer to Com. on APPR. with recommendation: To Consent Calendar. (Ayes 8. Noes 0.) (April 29). Re-referred to Com. on APPR. `committee-passage, committee-passage-favorable, referral-committee`
- **2021-05-03** Received by the Desk April 30 pursuant to Joint Rule 61(a)(2).
- **2021-05-12** From committee: Do pass. To Consent Calendar. (Ayes 16. Noes 0.) (May 12). `committee-passage, committee-passage-favorable`
- **2021-05-13** Read second time. Ordered to Consent Calendar. `reading-1, reading-2`
- **2021-05-20** Read third time. Passed. Ordered to the Senate. (Ayes 76. Noes 0. Page 1472.) `passage, reading-1, reading-3`
- **2021-05-20** In Senate. Read first time. To Com. on RLS. for assignment. `reading-1`
- **2021-06-03** Referred to Coms. on HOUSING and JUD. `referral-committee`
- **2021-06-30** From committee chair, with author's amendments: Amend, and re-refer to committee. Read second time, amended, and re-referred to Com. on HOUSING. `amendment-introduction, amendment-passage, reading-1, reading-2, referral-committee`
- **2021-07-08** From committee: Do pass and re-refer to Com. on JUD. with recommendation: To Consent Calendar. (Ayes 9. Noes 0.) (July 8). Re-referred to Com. on JUD. `committee-passage, committee-passage-favorable, referral-committee`
- **2021-07-14** From committee: Do pass and re-refer to Com. on APPR with recommendation: To Consent Calendar. (Ayes 11. Noes 0.) (July 13). Re-referred to Com. on APPR. `committee-passage, committee-passage-favorable, referral-committee`
- **2021-08-16** In committee: Referred to suspense file. `referral-committee`
- **2021-08-26** From committee: Do pass. (Ayes 7. Noes 0.) (August 26). `committee-passage, committee-passage-favorable`
- **2021-08-26** Read second time. Ordered to third reading. `reading-1, reading-2`
- **2021-09-03** Read third time and amended. Ordered to second reading. `amendment-passage, reading-1, reading-3`
- **2021-09-07** Read second time. Ordered to third reading. `reading-1, reading-2`
- **2021-09-08** Read third time. Passed. Ordered to the Assembly. (Ayes 38. Noes 0. Page 2502.). `passage, reading-1, reading-3`
- **2021-09-08** In Assembly. Concurrence in Senate amendments pending.
- **2021-09-10** Senate amendments concurred in. To Engrossing and Enrolling. (Ayes 78. Noes 0. Page 3111.). `amendment-passage, committee-passage-favorable`
- **2021-09-22** Enrolled and presented to the Governor at 2 p.m.
- **2021-09-28** Approved by the Governor. `executive-signature`
- **2021-09-28** Chaptered by Secretary of State - Chapter 360, Statutes of 2021. `became-law`

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/a83dc19b-d274-418b-85ca-a26ed1e8fced`. Confidence: reported (aggregated from official California legislature records).