republic-os/legislation/us/states/ca/20112012/ab-433.md

---
type: "Bill"
title: "Birth certificates: issuance."
description: "Under existing law, whenever a person born in this state has undergone surgical treatment for the purpose of altering his or her sexual characteristics to those of the opposite sex, a new birth certificate may be prepared reflecting the change of gender and any change of name. A petition for the issuance of a new birth certificate is permitted to be filed in the superior court of the county in which the petitioner resides. Existing law requires the petition to be accompanied by an affidavit of the physician documenting the sex change and allows for the filing of objections by any person who can, in those objections, show good cause against the change in birth certificate."
jurisdiction: "us/states/ca"
legislature: "California Legislature"
session: "20112012"
identifier: "AB 433"
citation: "California AB 433 (20112012)"
classification: ["bill"]
subjects: ["Birth certificates: issuance."]
status: "enacted"
primary_sponsors: ["Bonnie Lowenthal"]
version_count: 6
action_count: 17
vote_count: 5
first_action: "2011-02-14"
last_action: "2011-10-09"
source: "openstates"
source_identifier: "ocd-bill/f570ee22-df6f-4849-9093-219637e4c8df"
source_url: "http://leginfo.legislature.ca.gov/faces/billNavClient.xhtml?bill_id=201120120AB433"
source_hash: "6510a239d6cead330374f25d4da2d55eb36bd71940659cfbb2755fe1d6c9891e"
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 433 (20112012) — Birth certificates: issuance.

Under existing law, whenever a person born in this state has undergone surgical treatment for the purpose of altering his or her sexual characteristics to those of the opposite sex, a new birth certificate may be prepared reflecting the change of gender and any change of name. A petition for the issuance of a new birth certificate is permitted to be filed in the superior court of the county in which the petitioner resides. Existing law requires the petition to be accompanied by an affidavit of the physician documenting the sex change and allows for the filing of objections by any person who can, in those objections, show good cause against the change in birth certificate.

## Version chain

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

1. **02/14/11 - Introduced** (filed) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=201120120AB433&version=20110AB43399INT)
2. **03/29/11 - Amended Assembly** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=201120120AB433&version=20110AB43398AMD)
3. **06/10/11 - Amended Senate** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=201120120AB433&version=20110AB43397AMD)
4. **10/09/11 - Chaptered** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=201120120AB433&version=20110AB43395CHP)
5. **AB433** (committee substitute) — [source](http://leginfo.legislature.ca.gov/faces/billNavClient.xhtml?bill_id=201120120AB433)
6. **08/24/11 - Enrolled** (enrolled) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=201120120AB433&version=20110AB43396ENR)

## Votes

- Do pass as amended. — **4–1** (pass) · upper
- 3rd Reading AB433 Bonnie Lowenthal By Lieu — **23–13** (pass) · upper
- Do pass as amended. — **7–3** (pass) · lower
- AB 433 LOWENTHAL Concurrence in Senate Amendments — **51–26** (pass) · lower
- AB 433 LOWENTHAL Assembly Third Reading — **52–22** (pass) · lower

## Sponsors

- Bonnie Lowenthal — primary (person)

## Timeline

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

- **2011-02-14** Read first time. To print. `reading-1`
- **2011-02-15** From printer. May be heard in committee March 17.
- **2011-03-03** Referred to Com. on JUD. `referral-committee`
- **2011-03-25** From committee: Do pass as amended. (Ayes 7. Noes 3.) (March 22). `amendment-passage, committee-passage, committee-passage-favorable`
- **2011-03-29** Read second time and amended. Ordered to second reading. `reading-2, reading-1, amendment-passage`
- **2011-03-30** Read second time. Ordered to third reading. `reading-2, reading-1`
- **2011-05-05** Read third time. Passed. Ordered to the Senate. (Ayes 52. Noes 22. Page 1230.) `reading-3, reading-1, passage`
- **2011-05-05** In Senate. Read first time. To Com. on RLS. for assignment. `reading-1`
- **2011-05-19** Referred to Com. on JUD. `referral-committee`
- **2011-06-09** From committee: Do pass as amended. (Ayes 4. Noes 1.) (June 7). `amendment-passage, committee-passage, committee-passage-favorable`
- **2011-06-10** Read second time and amended. Ordered to third reading. `reading-2, reading-1, amendment-passage`
- **2011-07-14** Read third time. Passed. Ordered to the Assembly. (Ayes 23. Noes 13. Page 1848.). `reading-3, reading-1, passage`
- **2011-07-14** In Assembly. Concurrence in Senate amendments pending. May be considered on or after August 12 pursuant to Assembly Rule 77.
- **2011-08-22** Senate amendments concurred in. To Engrossing and Enrolling. (Ayes 51. Noes 26. Page 2482.). `committee-passage-favorable, amendment-passage`
- **2011-09-07** Enrolled and presented to the Governor at 3:30 p.m.
- **2011-10-09** Approved by the Governor. `executive-signature`
- **2011-10-09** Chaptered by Secretary of State - Chapter 718, Statutes of 2011.

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/f570ee22-df6f-4849-9093-219637e4c8df`. Confidence: reported (aggregated from official California legislature records).