republic-os/legislation/us/states/ca/20212022/ab-571.md

---
type: "Bill"
title: "Planning and zoning: density bonuses: affordable housing."
description: "Existing law, known as the Density Bonus Law, requires a city or county to provide a developer that proposes a housing development in the city or county with a density bonus and other incentives or concessions for the production of lower income housing units, or for the donation of land within the development, if the developer agrees to, among other things, construct a specified percentage of units for very low income, low-income, or moderate-income households or qualifying residents, including lower income students. Existing law requires the amount of a density bonus and the number of incentives or concessions a qualifying developer receives to be pursuant to a certain formula based on the total number of units in the housing development, as specified."
jurisdiction: "us/states/ca"
legislature: "California Legislature"
session: "20212022"
identifier: "AB 571"
citation: "California AB 571 (20212022)"
classification: ["bill"]
subjects: ["Planning and zoning: density bonuses: affordable housing."]
status: "enacted"
primary_sponsors: ["Mayes"]
version_count: 7
action_count: 27
vote_count: 8
first_action: "2021-02-11"
last_action: "2021-09-28"
source: "openstates"
source_identifier: "ocd-bill/8303d339-40e4-4d6c-85b7-6d9fc28c9ab8"
source_url: "http://leginfo.legislature.ca.gov/faces/billNavClient.xhtml?bill_id=202120220AB571"
source_hash: "6914a4d95685e1fce9f0d5b174444c4a5d41bc1f5deee79a63e499891c4f9f39"
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 571 (20212022) — Planning and zoning: density bonuses: affordable housing.

Existing law, known as the Density Bonus Law, requires a city or county to provide a developer that proposes a housing development in the city or county with a density bonus and other incentives or concessions for the production of lower income housing units, or for the donation of land within the development, if the developer agrees to, among other things, construct a specified percentage of units for very low income, low-income, or moderate-income households or qualifying residents, including lower income students. Existing law requires the amount of a density bonus and the number of incentives or concessions a qualifying developer receives to be pursuant to a certain formula based on the total number of units in the housing development, as specified.

## Version chain

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

1. **02/11/21 - Introduced** (filed) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=202120220AB571&version=20210AB57199INT)
2. **03/24/21 - Amended Assembly** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=202120220AB571&version=20210AB57198AMD)
3. **05/03/21 - Amended Assembly** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=202120220AB571&version=20210AB57197AMD)
4. **09/02/21 - Amended Senate** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=202120220AB571&version=20210AB57196AMD)
5. **09/28/21 - Chaptered** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=202120220AB571&version=20210AB57194CHP)
6. **AB571** (committee substitute) — [source](http://leginfo.legislature.ca.gov/faces/billNavClient.xhtml?bill_id=202120220AB571)
7. **09/10/21 - Enrolled** (enrolled) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=202120220AB571&version=20210AB57195ENR)

## Votes

- AB 571 Mayes Consent Calendar Second Day — **75–0** (pass) · lower
- Do pass. To Consent Calendar. — **15–0** (pass) · lower
- Do pass, but first be re-referred to the Committee on [Appropriations] — **5–0** (pass) · upper
- Do pass as amended and be re-referred to the Committee on [Appropriations] — **8–0** (pass) · lower
- AB 571 Mayes Concurrence in Senate Amendments — **79–0** (pass) · lower
- Do pass, but first be re-referred to the Committee on [Governance and Finance] — **8–0** (pass) · upper
- Do pass and be re-referred to the Committee on [Local Government] — **8–0** (pass) · lower
- 3rd Reading AB571 Mayes By Ochoa Bogh — **37–0** (pass) · upper

## Sponsors

- Mayes — primary (person)

## Timeline

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

- **2021-02-11** Read first time. To print. `reading-1`
- **2021-02-12** From printer. May be heard in committee March 14.
- **2021-02-18** Referred to Coms. on H. & C.D. and L. GOV. `referral-committee`
- **2021-03-24** 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`
- **2021-03-25** Re-referred to Com. on H. & C.D. `referral-committee`
- **2021-04-19** From committee: Do pass and re-refer to Com. on L. GOV. (Ayes 8. Noes 0.) (April 15). Re-referred to Com. on L. GOV. `committee-passage, committee-passage-favorable, referral-committee`
- **2021-04-29** From committee: Amend, and do pass as amended and re-refer to Com. on APPR. (Ayes 8. Noes 0.) (April 28). `amendment-introduction, amendment-passage, committee-passage, referral-committee`
- **2021-05-03** Read second time and amended. `amendment-passage, reading-1, reading-2`
- **2021-05-04** Re-referred to Com. on APPR. `referral-committee`
- **2021-05-19** From committee: Do pass. To Consent Calendar. (Ayes 15. Noes 0.) (May 19). `committee-passage, committee-passage-favorable`
- **2021-05-20** Read second time. Ordered to Consent Calendar. `reading-1, reading-2`
- **2021-05-27** Read third time. Passed. Ordered to the Senate. (Ayes 75. Noes 0. Page 1655.) `passage, reading-1, reading-3`
- **2021-05-28** In Senate. Read first time. To Com. on RLS. for assignment. `reading-1`
- **2021-06-09** Referred to Coms. on HOUSING and GOV. & F. `referral-committee`
- **2021-06-17** From committee: Do pass and re-refer to Com. on GOV. & F. (Ayes 8. Noes 0.) (June 17). Re-referred to Com. on GOV. & F. `committee-passage, committee-passage-favorable, referral-committee`
- **2021-07-01** From committee: Do pass and re-refer to Com. on APPR. (Ayes 5. Noes 0.) (July 1). Re-referred to Com. on APPR. `committee-passage, committee-passage-favorable, referral-committee`
- **2021-07-15** From committee: Be ordered to second reading pursuant to Senate Rule 28.8. `committee-passage, reading-2`
- **2021-08-16** Read second time. Ordered to third reading. `reading-1, reading-2`
- **2021-09-02** Read third time and amended. Ordered to second reading. `amendment-passage, reading-1, reading-3`
- **2021-09-03** Read second time. Ordered to third reading. `reading-1, reading-2`
- **2021-09-07** Read third time. Passed. Ordered to the Assembly. (Ayes 37. Noes 0. Page 2463.). `passage, reading-1, reading-3`
- **2021-09-07** In Assembly. Concurrence in Senate amendments pending. May be considered on or after September 9 pursuant to Assembly Rule 77.
- **2021-09-08** Assembly Rule 77 suspended. (Ayes 59. Noes 17. Page 2875.)
- **2021-09-08** Senate amendments concurred in. To Engrossing and Enrolling. (Ayes 79. Noes 0. Page 2905.). `amendment-passage, committee-passage-favorable`
- **2021-09-15** Enrolled and presented to the Governor at 5 p.m.
- **2021-09-28** Approved by the Governor. `executive-signature`
- **2021-09-28** Chaptered by Secretary of State - Chapter 346, 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/8303d339-40e4-4d6c-85b7-6d9fc28c9ab8`. Confidence: reported (aggregated from official California legislature records).