AB 1055 California Assembly · 2025-2026 Regular Session

Accessory dwelling units: proof of residential occupancy requirements.

Summary
Existing law, 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. Existing law similarly provides for the creation of junior accessory dwelling units by local ordinance or, if a local agency has not adopted an ordinance, by ministerial approval, in single-family residential zones in accordance with specified standards and conditions. Existing law generally prohibits a local agency from imposing additional standards, as specified, when evaluating a proposed accessory dwelling unit on a lot that includes a proposed or existing single-family dwelling. However, existing law authorizes a local agency to require that the property be used for rentals of terms 30 days or longer. This bill would additionally authorize a local agency to require the property owner to certify, as specified, that the accessory dwelling unit will be occupied as a residential dwelling unit for at least 6 months out of each calendar year. The bill would authorize the local agency to annually recertify, as specified, that the accessory dwelling unit is occupied as a residential dwelling unit for at least 6 months out of each calendar year. The bill would require the local agency, in enforcing the annual recertification provisions described above, to include at least 2 notices to the owner of the accessory dwelling unit, and would prohibit the local agency from, among other things, charging more than a reasonable fine for failure to comply with the above-described annual certification provisions, as specified.
Bill status failed 1 of 4 stages cleared
Introduction
Feb 2025
Committee Review
Floor Vote
Governor
Introduced Feb 20, 2025 Last action Feb 2, 2026
Maddy AI version diff · 3 comparisons

What changed between versions

03/10/25 - Amended Assembly 04/10/25 - Amended Assembly · 6 edits · Apr 10, 2025
MODERATE
The April amendment removed an unrelated provision about state agency electronic mail communications (Section 11104.5) and added detailed enforcement safeguards for the ADU residential occupancy certification requirement. The new provisions protect property owners from harsh penalties by capping fines, requiring multiple notices before enforcement, prohibiting forced demolition, and limiting recertification to a 10-year period.
SCOPE

The entire amendment to Government Code Section 11104.5 regarding state agency electronic transmission of information was removed from the bill, narrowing the bill's scope to only ADU occupancy requirements.

REQUIREMENT

Property owners must certify that the ADU will be occupied as a residential dwelling unit for at least six months out of each calendar year, but the certification is explicitly not made under penalty of perjury.

TIMELINE

Local agencies may require annual recertification through owner self-certification for the first 10 years only, after which the requirement expires.

ENFORCEMENT

Before enforcing the annual recertification, a local agency must provide at least two notices to the ADU owner.

Local agencies are prohibited from requiring an owner to tear down the ADU for failing to meet the six-months-per-year occupancy requirement.

Local agencies may not charge more than a reasonable fine for non-compliance, with 'reasonable' defined by reference to subdivision (c) of Section 25132.

Floor votes

How they voted

No floor votes recorded yet.
Full legislative history

Actions timeline

Total actions
12
Key actions
3
Committee
7
Amendments
2
Feb 2, 2026
Lower · Passed
From committee: Filed with the Chief Clerk pursuant to Joint Rule 56.
lower
Apr 24, 2025
Lower · Passed
In committee: Set, first hearing. Hearing canceled at the request of author.
lower
Apr 24, 2025
Committee
(Pending re-refer to Com. on L. GOV.)
lower
Apr 21, 2025
Committee
Re-referred to Com. on H. & C.D.
lower
Apr 10, 2025
Introduced
From committee chair, with author's amendments: Amend, and re-refer to Com. on H. & C.D. Read second time and amended.
lower
Mar 11, 2025
Committee
Re-referred to Com. on H. & C.D.
lower
Mar 10, 2025
Introduced
From committee chair, with author's amendments: Amend, and re-refer to Com. on H. & C.D. Read second time and amended.
lower
Mar 10, 2025
Committee
Referred to Coms. on H. & C.D. and L. GOV.
lower
Feb 21, 2025
Lower · Passed
From printer. May be heard in committee March 23.
lower
1 primary · 0 co-sponsors

Sponsors

Role
Legislator
Party
State
District
P
Photo of Tasha Boerner
Tasha Boerner
DDemocratic
CA
77