---
type: "Bill"
title: "Housing development: approvals."
description: "The Planning and Zoning Law provides for the creation of accessory dwelling units by local ordinance, or, if a local agency has not adopted an ordinance, by ministerial approval, in accordance with specified standards and conditions."
jurisdiction: "us/states/ca"
legislature: "California Legislature"
session: "20212022"
identifier: "SB 9"
citation: "California SB 9 (20212022)"
classification: ["bill"]
subjects: ["Housing development: approvals."]
status: "enacted"
primary_sponsors: ["Atkins"]
version_count: 7
action_count: 31
vote_count: 10
first_action: "2020-12-07"
last_action: "2021-09-16"
source: "openstates"
source_identifier: "ocd-bill/e96b7e44-4fb6-4aee-84bc-aa24eb5a5fa1"
source_url: "http://leginfo.legislature.ca.gov/faces/billNavClient.xhtml?bill_id=202120220SB9"
source_hash: "853a6cf14c723863587c45662df10e3dd951158176f67ec07b0cb5e086d1dc1e"
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 SB 9 (20212022) — Housing development: approvals.

The Planning and Zoning Law provides for the creation of accessory dwelling units by local ordinance, or, if a local agency has not adopted an ordinance, by ministerial approval, in accordance with specified standards and conditions.

## Version chain

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

1. **12/07/20 - Introduced** (filed) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=202120220SB9&version=20210SB999INT)
2. **04/05/21 - Amended Senate** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=202120220SB9&version=20210SB998AMD)
3. **04/27/21 - Amended Senate** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=202120220SB9&version=20210SB997AMD)
4. **08/16/21 - Amended Assembly** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=202120220SB9&version=20210SB996AMD)
5. **09/16/21 - Chaptered** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=202120220SB9&version=20210SB994CHP)
6. **SB9** (committee substitute) — [source](http://leginfo.legislature.ca.gov/faces/billNavClient.xhtml?bill_id=202120220SB9)
7. **09/01/21 - Enrolled** (enrolled) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=202120220SB9&version=20210SB995ENR)

## Votes

- Do pass — **5–2** (pass) · upper
- Unfinished Business SB9 Atkins et al. Concurrence — **28–7** (pass) · upper
- Do pass. — **12–1** (pass) · lower
- Do pass and be re-referred to the Committee on [Appropriations] — **5–1** (pass) · lower
- Do pass as amended, but first amend, and re-refer to the Committee on [Appropriations] — **5–0** (pass) · upper
- Do pass, but first be re-referred to the Committee on [Governance and Finance] — **7–2** (pass) · upper
- Placed on suspense file — **7–0** (pass) · upper
- 3rd Reading SB9 Atkins et al. — **28–6** (pass) · upper
- SB 9 Atkins Senate Third Reading By Robert Rivas — **45–19** (pass) · lower
- Do pass and be re-referred to the Committee on [Housing and Community Development] — **5–1** (pass) · lower

## Sponsors

- Atkins — primary (person)
- Caballero — author (person)
- Cortese — coauthor (person)
- Gonzalez — coauthor (person)
- McGuire — coauthor (person)
- Robert Rivas — coauthor (person)
- Rubio — author (person)
- Wicks — coauthor (person)
- Wiener — author (person)

## Timeline

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

- **2020-12-07** Introduced. Read first time. To Com. on RLS. for assignment. To print. `introduction, reading-1`
- **2020-12-08** From printer. May be acted upon on or after January 7.
- **2021-01-28** Referred to Coms. on HOUSING, GOV. & F., and EQ. `referral-committee`
- **2021-01-28** Referral to Com. on E.Q. rescinded because of the limitations placed on committee hearings due to ongoing health and safety risks of the COVID-19 virus.
- **2021-02-24** Set for hearing March 18.
- **2021-03-03** March 18 set for first hearing canceled at the request of author.
- **2021-04-05** From committee with author's amendments. Read second time and amended. Re-referred to Com. on HOUSING. `amendment-passage, committee-passage, reading-1, reading-2, referral-committee`
- **2021-04-06** Set for hearing April 15.
- **2021-04-15** From committee: Do pass and re-refer to Com. on GOV. & F. (Ayes 7. Noes 2. Page 814.) (April 15). Re-referred to Com. on GOV. & F. `committee-passage, committee-passage-favorable, referral-committee`
- **2021-04-16** Set for hearing April 22.
- **2021-04-26** From committee: Do pass as amended and re-refer to Com. on APPR. (Ayes 5. Noes 0. Page 895.) (April 22). `amendment-passage, committee-passage, committee-passage-favorable`
- **2021-04-27** Read second time and amended. Re-referred to Com. on APPR. `amendment-passage, reading-1, reading-2, referral-committee`
- **2021-04-30** Set for hearing May 10.
- **2021-05-10** May 10 hearing: Placed on APPR suspense file.
- **2021-05-14** Set for hearing May 20.
- **2021-05-20** From committee: Do pass. (Ayes 5. Noes 2. Page 1178.) (May 20). `committee-passage, committee-passage-favorable`
- **2021-05-20** Read second time. Ordered to third reading. `reading-1, reading-2`
- **2021-05-26** Read third time. Passed. (Ayes 28. Noes 6. Page 1257.) Ordered to the Assembly. `passage, reading-1, reading-3`
- **2021-05-26** In Assembly. Read first time. Held at Desk. `reading-1`
- **2021-06-03** Referred to Coms. on L. GOV. and H. & C.D. `referral-committee`
- **2021-06-10** From committee: Do pass and re-refer to Com. on H. & C.D. (Ayes 5. Noes 1.) (June 9). Re-referred to Com. on H. & C.D. `committee-passage, committee-passage-favorable, referral-committee`
- **2021-06-23** From committee: Do pass and re-refer to Com. on APPR. (Ayes 5. Noes 1.) (June 22). Re-referred to Com. on APPR. `committee-passage, committee-passage-favorable, referral-committee`
- **2021-08-16** From committee with author's amendments. Read second time and amended. Re-referred to Com. on APPR. `amendment-passage, committee-passage, reading-1, reading-2, referral-committee`
- **2021-08-19** From committee: Do pass. (Ayes 12. Noes 1.) (August 19). `committee-passage, committee-passage-favorable`
- **2021-08-23** Read second time. Ordered to third reading. `reading-1, reading-2`
- **2021-08-26** Read third time. Passed. (Ayes 45. Noes 19. Page 2516.) Ordered to the Senate. `passage, reading-1, reading-3`
- **2021-08-26** In Senate. Concurrence in Assembly amendments pending.
- **2021-08-30** Assembly amendments concurred in. (Ayes 28. Noes 7. Page 2213.) Ordered to engrossing and enrolling. `amendment-passage, committee-passage-favorable`
- **2021-09-03** Enrolled and presented to the Governor at 2 p.m.
- **2021-09-16** Approved by the Governor. `executive-signature`
- **2021-09-16** Chaptered by Secretary of State. Chapter 162, 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/e96b7e44-4fb6-4aee-84bc-aa24eb5a5fa1`. Confidence: reported (aggregated from official California legislature records).