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CaliforniaAB 10612025-2026 Regular SessionHouseWALLET

Housing developments: urban lot splits: historical resources.

Sponsored By: Sharon Quirk-Silva (Democratic)

Signed by Governor

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Bill Overview

Analyzed Economic Effects

3 provisions identified: 3 benefits, 0 costs, 0 mixed.

Homeowners can add two homes faster

Local agencies review up to two homes on a single-family lot without a hearing when the lot is in an urbanized area or urban cluster and the project meets the site rules in Section 65913.4 as of September 16, 2021. Local rules cannot block two units or force either unit below 800 square feet. No setback is required for a structure rebuilt in the same spot and size; otherwise, side and rear setbacks can be up to 4 feet. Any standards must be objective, applied the same across the zone, and may only be more permissive for these projects.

Streamlined urban lot splits with safeguards

The law requires local agencies to approve qualifying urban lot splits without a hearing. The parcel cannot be a state or local historic landmark, and the split cannot require demolition or alteration of protected structures. This creates a faster path for owners to create two smaller lots in urban areas.

Stronger tenant and historic protections

The law protects existing affordable homes and renters. Fast-track two-unit projects cannot demolish or alter units with recorded affordability limits, rent-controlled units, or units rented in the last three years. Owners who used the Ellis Act to withdraw rentals in the past 15 years cannot use the ministerial two-unit path on that parcel. Parcels listed as state or local historic resources, or contributing structures in historic districts, cannot use the ministerial two-unit process.

Sponsors & Cosponsors

Sponsor

  • Sharon Quirk-Silva

    Democratic • House

Cosponsors

  • Alex Lee

    Democratic • House

  • Scott Wiener

    Democratic • Senate

Roll Call Votes

All Roll Calls

Yes: 154 • No: 52

House vote • 9/8/2025

Item 16 — Assembly AFLOOR

Yes: 46 • No: 18

Senate vote • 9/3/2025

Item 167 — Senate SFLOOR

Yes: 24 • No: 10

legislature vote • 7/9/2025

Vote in CS82

Yes: 5 • No: 2

legislature vote • 6/17/2025

Vote in CS75

Yes: 7 • No: 2

House vote • 5/19/2025

Item 28 — Assembly AFLOOR

Yes: 45 • No: 14

legislature vote • 4/30/2025

Vote in CX25

Yes: 10 • No: 3

legislature vote • 4/23/2025

Vote in CX15

Yes: 9 • No: 1

legislature vote • 3/26/2025

Vote in CX10

Yes: 8 • No: 2

Actions Timeline

  1. Chaptered by Secretary of State - Chapter 505, Statutes of 2025.

    10/10/2025Senate

  2. Approved by the Governor.

    10/10/2025legislature

  3. Enrolled and presented to the Governor at 4:30 p.m.

    9/15/2025legislature

  4. Senate amendments concurred in. To Engrossing and Enrolling. (Ayes 46. Noes 18. Page 3021.).

    9/8/2025House

  5. In Assembly. Concurrence in Senate amendments pending.

    9/4/2025House

  6. Read third time. Passed. Ordered to the Assembly. (Ayes 24. Noes 10. Page 2435.).

    9/3/2025Senate

  7. Read second time. Ordered to third reading.

    8/20/2025Senate

  8. From committee: Be ordered to second reading pursuant to Senate Rule 28.8.

    8/19/2025Senate

  9. Read second time and amended. Re-referred to Com. on APPR.

    7/10/2025Senate

  10. From committee: Amend, and do pass as amended and re-refer to Com. on APPR. (Ayes 5. Noes 2.) (July 9).

    7/9/2025Senate

  11. From committee chair, with author's amendments: Amend, and re-refer to committee. Read second time, amended, and re-referred to Com. on L. GOV.

    6/23/2025Senate

  12. From committee: Do pass and re-refer to Com. on L. GOV. (Ayes 7. Noes 2.) (June 17). Re-referred to Com. on L. GOV.

    6/18/2025Senate

  13. Referred to Coms. on HOUSING and L. GOV.

    5/28/2025Senate

  14. In Senate. Read first time. To Com. on RLS. for assignment.

    5/20/2025Senate

  15. Read third time. Passed. Ordered to the Senate. (Ayes 45. Noes 14. Page 1591.)

    5/19/2025House

  16. Read second time. Ordered to third reading.

    5/1/2025House

  17. From committee: Do pass. (Ayes 10. Noes 3.) (April 30).

    4/30/2025House

  18. From committee: Do pass and re-refer to Com. on APPR. (Ayes 9. Noes 1.) (April 23). Re-referred to Com. on APPR.

    4/23/2025House

  19. Re-referred to Com. on L. GOV.

    4/1/2025House

  20. Read second time and amended.

    3/28/2025House

  21. From committee: Amend, and do pass as amended and re-refer to Com. on L. GOV. (Ayes 8. Noes 2.) (March 26).

    3/27/2025House

  22. Referred to Coms. on H. & C.D. and L. GOV.

    3/10/2025House

  23. From printer. May be heard in committee March 23.

    2/21/2025House

  24. Read first time. To print.

    2/20/2025House

Bill Text

  • Chaptered

    10/10/2025

    HTML

  • Enrolled

    9/10/2025

    HTML

  • Amended Senate

    7/10/2025

    HTML

  • Amended Senate

    6/23/2025

    HTML

  • Amended Assembly

    3/28/2025

    HTML

  • Introduced

    2/20/2025

    HTML

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