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California · 2025–26 Regular Session · Senate Bill

SB 9: Accessory Dwelling Units: ordinances.

Enacted Official data

  1. Introduced
  2. In committee
  3. Passed one chamber
  4. Passed both chambers
  5. Enacted

Last official action: ·Record last updated:

Plain-language summary

SB 9 is a senate bill introduced in the California Senate on December 2, 2024. According to its official title, it concerns: Accessory Dwelling Units: ordinances. Primary sponsor: Jesse Arreguín (D). It lists 1 additional sponsor. Most recent recorded action (October 10, 2025): Chaptered by Secretary of State. Chapter 510, Statutes of 2025.

Generated automatically from the official title, sponsor list, and status record only. It does not characterize the bill’s purpose or effects. How summaries are written

Official summary

Legislative Counsel’s Digest (official, as of the latest version). Written by nonpartisan legislative staff; reproduced verbatim.

The Planning and Zoning Law provides for the creation of an accessory dwelling unit by local ordinance, or, if a local agency has not adopted an ordinance, by ministerial approval, in accordance with specified standards. The law requires a local agency to submit an accessory dwelling unit ordinance to the Department of Housing and Community Development within 60 days after adoption. The law authorizes the department to submit written findings to a local agency as to whether the ordinance complies with the standards. If the department finds that the ordinance does not comply with the standards, the law requires the department to provide a local agency reasonable time, no longer than 30 days, to respond to its findings. If the local agency does not amend its ordinance in response to those findings or does not adopt a resolution with findings explaining the reason the ordinance complies with the standards and addressing the department’s findings, the law requires the department to notify the local agency and authorizes the department to notify the Attorney General that the local agency is in violation of state law.

This bill would invalidate the ordinance if the local agency fails to submit a copy of the ordinance to the department within 60 days of adoption or fails to respond to the department’s findings that the ordinance does not comply with the standards within 30 days, as described above.

Sponsors

Sponsors by party (alphabetical): Democratic 2

NameRolePartyChamberDistrict
Jesse ArreguínPrimary sponsorDemocraticSenate7
Jerry McNerneyCo-sponsorDemocraticSenate5

“Support” is shown only as formal sponsorship recorded by the legislature. Roll-call votes are available on the official bill page.

Recent official actions

  1. Chaptered by Secretary of State. Chapter 510, Statutes of 2025.
  2. Approved by the Governor.
  3. Enrolled and presented to the Governor at 2 p.m.
  4. Assembly amendments concurred in. (Ayes 31. Noes 3. Page 2424.) Ordered to engrossing and enrolling.
  5. In Senate. Concurrence in Assembly amendments pending.
  6. Read third time. Passed. (Ayes 62. Noes 2. Page 2771.) Ordered to the Senate.
  7. Read second time. Ordered to third reading.
  8. From committee: Do pass. (Ayes 9. Noes 0.) (July 16).
  9. Read second time and amended. Re-referred to Com. on L. GOV.
  10. From committee: Do pass as amended and re-refer to Com. on L. GOV. (Ayes 9. Noes 0.) (June 18).
  11. Referred to Coms. on H. & C.D. and L. GOV.
  12. In Assembly. Read first time. Held at Desk.

Sources

  1. California Legislative Information — pubinfo database export
  2. Official bill page