--- type: "Bill" title: "Mitigation Fee Act: mitigating vehicular traffic impacts." description: "Existing law, the Mitigation Fee Act, imposes various requirements with respect to the establishment, increase, or imposition of a fee by a local agency as a condition of approval of a development project. Existing law requires a local agency that imposes a fee on a housing development for the purpose of mitigating vehicular traffic impacts to set the rate for that fee, if the housing development satisfies all of certain prescribed characteristics, to reflect a lower rate of automobile trip generation associated with such housing developments in comparison with housing developments without the prescribed characteristics, unless the local agency adopts findings after a public hearing establishing that the housing development, even with those characteristics, would not generate fewer automobile trips than a housing development without those characteristics." jurisdiction: "us/states/ca" legislature: "California Legislature" session: "20252026" identifier: "SB 358" citation: "California SB 358 (20252026)" classification: ["bill"] subjects: ["MitigationFeeAct", "mitigatingvehiculartrafficimpacts"] status: "enacted" primary_sponsors: ["Becker"] version_count: 7 action_count: 27 vote_count: 6 first_action: "2025-02-12" last_action: "2025-10-10" source: "openstates" source_identifier: "ocd-bill/7e48987a-0384-4b96-b549-0463695d4b2d" source_url: "http://leginfo.legislature.ca.gov/faces/billNavClient.xhtml?bill_id=202520260SB358" source_hash: "b55f5e1848278d79fd7f11da296b40052c4a0ed2748602e869174d4bee8b5263" 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 358 (20252026) — Mitigation Fee Act: mitigating vehicular traffic impacts. Existing law, the Mitigation Fee Act, imposes various requirements with respect to the establishment, increase, or imposition of a fee by a local agency as a condition of approval of a development project. Existing law requires a local agency that imposes a fee on a housing development for the purpose of mitigating vehicular traffic impacts to set the rate for that fee, if the housing development satisfies all of certain prescribed characteristics, to reflect a lower rate of automobile trip generation associated with such housing developments in comparison with housing developments without the prescribed characteristics, unless the local agency adopts findings after a public hearing establishing that the housing development, even with those characteristics, would not generate fewer automobile trips than a housing development without those characteristics. ## Version chain The bill's text revisions, in order — the diff chain from filing to enrollment. 1. **02/12/25 - Introduced** (filed) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=202520260SB358&version=20250SB35899INT) 2. **05/01/25 - Amended Senate** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=202520260SB358&version=20250SB35898AMD) 3. **05/27/25 - Amended Senate** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=202520260SB358&version=20250SB35897AMD) 4. **07/07/25 - Amended Assembly** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=202520260SB358&version=20250SB35896AMD) 5. **10/10/25 - Chaptered** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=202520260SB358&version=20250SB35894CHP) 6. **SB358** (committee substitute) — [source](http://leginfo.legislature.ca.gov/faces/billNavClient.xhtml?bill_id=202520260SB358) 7. **09/10/25 - Enrolled** (enrolled) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=202520260SB358&version=20250SB35895ENR) ## Votes - Do pass as amended and be re-referred to the Committee on [Appropriations] — **9–0** (pass) · lower - SB 358 Becker Senate Third Reading By Ward — **53–14** (pass) · lower - 3rd Reading — **27–11** (pass) · upper - Unfinished Business SB358 Becker Concurrence — **28–9** (pass) · upper - Do pass. — **11–2** (pass) · lower - Do pass as amended, but first amend, and re-refer to the Committee on [Appropriations] — **5–2** (pass) · upper ## Sponsors - Becker — primary (person) ## Timeline The legislative action history — every referral, reading, and vote. - **2025-02-12** Introduced. Read first time. To Com. on RLS. for assignment. To print. `introduction, reading-1` - **2025-02-13** From printer. May be acted upon on or after March 15. - **2025-02-19** Referred to Com. on L. GOV. `referral-committee` - **2025-03-24** Set for hearing April 23. - **2025-04-10** April 23 set for first hearing canceled at the request of author. - **2025-04-11** Set for hearing April 30. - **2025-04-30** From committee: Do pass as amended and re-refer to Com. on APPR. (Ayes 5. Noes 2. Page 968.) (April 30). `amendment-passage, committee-passage, committee-passage-favorable` - **2025-05-01** Read second time and amended. Re-referred to Com. on APPR. `amendment-passage, reading-1, reading-2, referral-committee` - **2025-05-09** Set for hearing May 19. - **2025-05-19** From committee: Be ordered to second reading pursuant to Senate Rule 28.8. `committee-passage, reading-2` - **2025-05-20** Read second time. Ordered to third reading. `reading-1, reading-2` - **2025-05-27** Read third time and amended. `amendment-passage, reading-1, reading-3` - **2025-05-27** Ordered to second reading. - **2025-05-28** Read second time. Ordered to third reading. `reading-1, reading-2` - **2025-06-02** Read third time. Passed. (Ayes 27. Noes 11. Page 1378.) Ordered to the Assembly. `passage, reading-1, reading-3` - **2025-06-03** In Assembly. Read first time. Held at Desk. `reading-1` - **2025-06-09** Referred to Com. on L. GOV. `referral-committee` - **2025-07-03** From committee: Do pass as amended and re-refer to Com. on APPR. (Ayes 9. Noes 0.) (July 2). `amendment-passage, committee-passage, committee-passage-favorable` - **2025-07-07** Read second time and amended. Re-referred to Com. on APPR. `amendment-passage, reading-1, reading-2, referral-committee` - **2025-08-20** From committee: Do pass. (Ayes 11. Noes 2.) (August 20). `committee-passage, committee-passage-favorable` - **2025-08-21** Read second time. Ordered to third reading. `reading-1, reading-2` - **2025-09-03** Read third time. Passed. (Ayes 53. Noes 14. Page 2869.) Ordered to the Senate. `passage, reading-1, reading-3` - **2025-09-03** In Senate. Concurrence in Assembly amendments pending. - **2025-09-08** Assembly amendments concurred in. (Ayes 28. Noes 9. Page 2605.) Ordered to engrossing and enrolling. `amendment-passage, committee-passage-favorable` - **2025-09-16** 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 515, 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/7e48987a-0384-4b96-b549-0463695d4b2d`. Confidence: reported (aggregated from official California legislature records).