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AB-462 • 2026

Land use: accessory dwelling units.

Land use: accessory dwelling units.

Education
Enacted

This bill passed the Legislature and reached final enactment based on the latest official action.

Sponsor
Lowenthal (A) , Rivas
Last action
2025-10-10
Official status
Chaptered by Secretary of State - Chapter 491, Statutes of 2025.
Effective date
Not listed

Plain English Breakdown

The candidate explanation included claims about exemptions that were not supported by the official source material.

Rules for Accessory Dwelling Units During Emergencies

AB-462 allows local agencies to issue certificates of occupancy for accessory dwelling units (ADUs) during emergencies declared by the Governor after February 1, 2025, and requires permitting agencies to approve or deny ADU applications within 60 days.

What This Bill Does

  • Allows local agencies to issue a certificate of occupancy for an accessory dwelling unit constructed in a county subject to a state of emergency declaration by the Governor on or after February 1, 2025, if certain requirements are met, including substantial damage or destruction of the primary dwelling.
  • Requires permitting agencies to either approve or deny applications for ADUs within 60 days from receiving a completed application, unless the permit is linked with new home construction permits.
  • Applies these rules to coastal areas managed by the California Coastal Commission and requires them to follow similar timelines.

Who It Names or Affects

  • Local governments and agencies responsible for issuing permits and certificates of occupancy.
  • People who want to build accessory dwelling units in areas affected by a state of emergency.
  • The California Coastal Commission when dealing with ADU applications in coastal zones.

Terms To Know

Accessory Dwelling Unit (ADU)
A smaller living space, like an apartment or cottage, built on the same property as a main house.
Certificate of Occupancy
A document that says a building is safe and ready to be used by people.

Limits and Unknowns

  • The bill does not specify when it will become effective, but it can take effect immediately as an urgency statute.
  • It only applies during emergencies declared after February 1, 2025, according to the Governor's proclamation.

Bill History

  1. 2025-10-10 California Legislative Information

    Chaptered by Secretary of State - Chapter 491, Statutes of 2025.

  2. 2025-10-10 California Legislative Information

    Approved by the Governor.

  3. 2025-09-24 California Legislative Information

    Enrolled and presented to the Governor at 3 p.m.

  4. 2025-09-12 California Legislative Information

    Senate amendments concurred in. To Engrossing and Enrolling. (Ayes 79. Noes 0. Page 3375.).

  5. 2025-09-12 California Legislative Information

    In Assembly. Concurrence in Senate amendments pending.

  6. 2025-09-11 California Legislative Information

    Read third time. Urgency clause adopted. Passed. Ordered to the Assembly. (Ayes 39. Noes 0. Page 2916.).

  7. 2025-09-02 California Legislative Information

    Read second time. Ordered to third reading.

  8. 2025-08-29 California Legislative Information

    Read second time and amended. Ordered returned to second reading.

  9. 2025-08-29 California Legislative Information

    From committee: Amend, and do pass as amended. (Ayes 7. Noes 0.) (August 29).

  10. 2025-08-18 California Legislative Information

    In committee: Referred to suspense file.

  11. 2025-07-17 California Legislative Information

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

  12. 2025-07-16 California Legislative Information

    From committee: Amend, and do pass as amended and re-refer to Com. on APPR. (Ayes 10. Noes 0.) (July 15).

  13. 2025-07-10 California Legislative Information

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

  14. 2025-07-09 California Legislative Information

    From committee: Amend, and do pass as amended and re-refer to Com. on HOUSING. (Ayes 7. Noes 0.) (July 8).

  15. 2025-05-13 California Legislative Information

    From committee chair, with author's amendments: Amend, and re-refer to committee. Read second time, amended, and re-referred to Com. on N.R. & W.

  16. 2025-04-23 California Legislative Information

    Re-referred to Coms. on N.R. & W. and HOUSING.

  17. 2025-04-02 California Legislative Information

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

  18. 2025-04-01 California Legislative Information

    Read third time. Urgency clause adopted. Passed. Ordered to the Senate. (Ayes 77. Noes 0. Page 955.).

  19. 2025-03-20 California Legislative Information

    Read second time. Ordered to third reading.

  20. 2025-03-19 California Legislative Information

    From committee: Do pass. (Ayes 15. Noes 0.) (March 19).

  21. 2025-03-19 California Legislative Information

    Coauthors revised.

  22. 2025-03-12 California Legislative Information

    From committee: Do pass and re-refer to Com. on APPR. (Ayes 11. Noes 0.) (March 12). Re-referred to Com. on APPR.

  23. 2025-02-28 California Legislative Information

    Re-referred to Com. on H. & C.D.

  24. 2025-02-27 California Legislative Information

    From committee chair, with author's amendments: Amend, and re-refer to Com. on H. & C.D. Read second time and amended.

  25. 2025-02-18 California Legislative Information

    Referred to Com. on H. & C.D.

  26. 2025-02-07 California Legislative Information

    From printer. May be heard in committee March 9.

  27. 2025-02-06 California Legislative Information

    Read first time. To print.

Official Summary Text

AB 462, Lowenthal.
Land use: accessory dwelling units.
Existing law provides for the creation by local ordinance, or by ministerial approval if a local agency has not adopted an ordinance, of accessory dwelling units in areas zoned for single-family or multifamily dwelling residential use in accordance with specified standards and conditions. Existing law prohibits a local agency from issuing a certificate of occupancy for an accessory dwelling unit before the local agency issues a certificate of occupancy for the primary dwelling.
This bill, notwithstanding that prohibition, would require a local agency to issue a certificate of occupancy for an accessory dwelling unit constructed in a county that is subject to a proclamation of a state of emergency made by the Governor on or after February 1, 2025, even if the primary dwelling has not yet been issued a certificate of occupancy, if certain
requirements are met, including that the primary dwelling was substantially damaged or destroyed by an event referenced in the state of emergency proclamation. By imposing new duties on local agencies, the bill would impose a state-mandated local program.
Existing law requires a permitting agency to either approve or deny an application to create or serve an accessory dwelling unit within 60 days from the date the permitting agency receives a completed application if there is an existing single-family or multifamily dwelling on the lot. Existing law deems the application approved if the local agency has not approved or denied the completed application within 60 days. Under existing law, if the permit application to create or serve an accessory dwelling unit is submitted with a permit application to create or serve a new single-family or multifamily dwelling on
the lot, the permitting agency may delay approving or denying the permit application for the accessory dwelling unit until the permitting agency approves or denies the permit application to create or serve the new single-family or multifamily dwelling, as provided.
The California Coastal Act of 1976, which is administered by the California Coastal Commission, requires any person wishing to perform or undertake any development in the coastal zone, as defined, to obtain a coastal development permit from a local government or the commission, except as provided. Existing law specifies that the laws governing accessory dwelling units do not supersede or in any way alter or lessen the effect or application of the act, except as specified.
This bill would create an exception to the above provision by requiring a local government or the commission, as specified, to either approve or deny a coastal development permit application for an accessory dwelling unit within 60 days of receiving a completed application. The bill would, notwithstanding that 60-day time limit, authorize the commission, if a coastal development permit application to create or serve an accessory dwelling unit is submitted with a coastal development permit application to create or serve a new single-family or multifamily dwelling on the lot, to delay approving or denying the coastal development permit application for the accessory dwelling unit until the commission approves or denies the coastal development permit application to create or serve the new single-family or multifamily dwelling. Under the bill, and except under the circumstance described above, if the commission has not approved or denied a completed application within 60
days, the application would be deemed approved.
The bill would include findings that changes proposed by this bill address a matter of statewide concern rather than a municipal affair and, therefore, apply to all cities, including charter cities.
The California Constitution requires the state to reimburse local agencies and school districts for certain costs mandated by the state. Statutory provisions establish procedures for making that reimbursement.
This bill would provide that no reimbursement is required by this act for a specified reason.
This bill would declare that it is to take effect immediately as an urgency statute.

Current Bill Text

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