SB 663 California Senate · 2025-2026 Regular Session

Winter Fires of 2025: real property tax: exemptions and reassessment.

Summary
(1) The California Constitution generally limits ad valorem taxes on real property to 1% of the full cash value of that property. For purposes of this limitation, "full cash value" is defined as the assessor's valuation of real property as shown on the 1975–76 tax bill under "full cash value" or, thereafter, the appraised value of that real property when purchased, newly constructed, or a change in ownership has occurred. Existing law defines "newly constructed" and "new construction" to mean any addition to real property since the last lien date and any alteration of land or of any improvement since the last lien date that constitutes a major rehabilitation thereof or that converts the property to a different use. Existing law, where real property has been damaged or destroyed by misfortune or calamity, excludes from the definition of "newly constructed" and "new construction" any timely reconstruction of the real property, or portion thereof, where the property after reconstruction is substantially equivalent to the property prior to damage or destruction. Existing law, pursuant to the authorization of the California Constitution, authorizes the transfer of the base year value of property that is substantially damaged or destroyed by a disaster, as declared by the Governor, to comparable replacement property within the same county that is acquired or newly constructed within 5 years after the disaster, as provided. Existing law authorizes the owner of property substantially damaged or destroyed by a disaster, as declared by the Governor, to apply the base year value of that property to replacement property reconstructed on the same site of the damaged or destroyed property within 5 years after the disaster if the reconstructed property is comparable to the substantially damaged or destroyed property, determined as provided. This bill would extend the 5-year time period described above by 3 years if the property was substantially damaged or destroyed by the 2025 Palisades Fire, Eaton Fire, Hurst Fire, Lidia Fire, Sunset Fire, or Woodley Fire, or the 2024 Mountain Fire or Franklin Fire, on or after November 1, 2024, but before February 1, 2025. The bill would make these provisions applicable to the determination of base year values for the 2025–26 fiscal year and fiscal years thereafter. By imposing additional duties on local tax officials, the bill would create a state-mandated local program. (2) The California Constitution authorizes the Legislature to authorize local governments to provide for the assessment or reassessment of taxable property physically damaged or destroyed after the lien date to which the assessment or reassessment relates. Existing property tax law authorizes the board of supervisors of a county, by ordinance, to provide that every assessee of any taxable property, or any person liable for the taxes thereon, whose property was damaged or destroyed without their fault, may apply for reassessment of that property, as provided. Existing property tax law requires, for property to be eligible for reassessment under these provisions, that the damage or destruction be caused by one of 3 specified occurrences, including a major misfortune or calamity in an area or region subsequently proclaimed by the Governor to be in a state of disaster if the property was damaged or destroyed by the misfortune or calamity that caused the Governor to proclaim the region to be in a state of disaster. Existing property tax law generally requires that an application for reassessment be filed within the latter of the time specified in the county's ordinance or within 12 months of the misfortune or calamity and be executed under penalty of perjury. This bill would also authorize a local government to provide for the assessment or reassessment of taxable property damaged by a major misfortune or calamity in an area or regions subsequently proclaimed to be in a state of emergency, as specified. The bill would authorize the local government by ordinance to provide the assessor the discretion to determine the appropriate date of damage for the purposes of reassessment. This bill would, in the case of property damaged or destroyed by the 2025 Palisades Fire, Eaton Fire, Hurst Fire, Lidia Fire, Sunset Fire, or Woodley Fire, or the 2024 Mountain Fire or Franklin Fire, extend the period to file for reassessment to the latter of the time specified in the county's ordinance or within 24 months of the fires. By expanding the crime of perjury, this bill would impose a state-mandated local program. (3) Existing property tax law provides, pursuant to the authorization of the California Constitution, a disabled veteran's property tax exemption for the principal place of residence of a veteran or a veteran's spouse, including an unmarried surviving spouse, if the veteran, because of an injury incurred in military service, is blind in both eyes, has lost the use of 2 or more limbs, or is totally disabled, as those terms are defined, or if the veteran has, as a result of a service-connected injury or disease, died while on active duty in military service. Existing law, for purposes of this exemption, deems property to be the principal place of residence of a veteran if the veteran is confined to a hospital or other care facility, as provided. This bill would additionally deem property to be the principal place of residence of a veteran if a dwelling on the property was completely destroyed in a disaster for which the Governor proclaimed a state of emergency and specified conditions are met. (4) Existing property tax law, in accordance with the California Constitution, provides for various exemptions for property used exclusively for a specified exempt purpose. This bill, in the case of property impacted by the 2025 Palisades Fire, Eaton Fire, Hurst Fire, Lidia Fire, Sunset Fire, or Woodley Fire, or the 2024 Mountain Fire or Franklin Fire, would deem property to be eligible for a use-based exemption, as specified, if the property received an exemption for the 2025 calendar year, the property is no longer used for an exempt purpose due to damage from the fires, and certain other conditions are met, including that the property has not changed ownership since the commencement date of the applicable disaster. The bill would make these provisions operative only for lien dates prior to January 1, 2033. (5) This bill would make legislative findings and declarations as to the necessity of a special statute for the County of Los Angeles and the County of Ventura. (6) 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 with regard to certain mandates no reimbursement is required by this act for a specified reason. With regard to any other mandates, this bill would provide that, if the Commission on State Mandates determines that the bill contains costs so mandated by the state, reimbursement for those costs shall be made pursuant to the statutory provisions noted above. (7) Existing law requires the state to reimburse local agencies annually for certain property tax revenues lost as a result of any exemption or classification of property for purposes of ad valorem property taxation. This bill would provide that, notwithstanding those provisions, no appropriation is made and the state shall not reimburse local agencies for property tax revenues lost by them pursuant to the bill. (8) This bill would declare that it is to take effect immediately as an urgency statute.
Bill status signed all 5 stages cleared
Introduction
Feb 2025
Committee Review
Sep 2025
Senate Passage
Jun 2025
Assembly Passage
Sep 2025
Signed into Law
Oct 2025
Introduced Feb 20, 2025 Signed Oct 10, 2025
Maddy AI version diff · 7 comparisons

What changed between versions

10/10/25 - Chaptered SB663 · 1 edit
MINOR
No substantive policy changes occurred between these two versions. The diff reflects a change in document format from the official authenticated 'Chaptered' version to the online bill viewer presentation of the same enacted law (SB 663, Chapter 549). All legislative content, including the digest and statutory text, is identical.
TECHNICAL

The document was reformatted from the official authenticated chaptered layout (with page numbers, 'STATE OF CALIFORNIA AUTHENTICATED ELECTRONIC LEGAL MATERIAL' header, and traditional bill formatting) to a web-based bill viewer format that includes navigation elements, version history links, and a different visual structure. No policy language was added, removed, or altered.

Floor votes · Senate Jun 3, 2025 · Assembly Sep 9, 2025

How they voted

390
Passed · 1 other
Total votes 40
Jun 3, 2025
D Democratic30
29 Yea 1
96% Yea
R Republican10
10 Yea
100% Yea
Vote distribution
All Yea All Nay Mixed No data
Full legislative history

Actions timeline

Total actions
35
Key actions
16
Committee
8
Amendments
9
Oct 10, 2025
Signed into law
Approved by the Governor.
legislature
Sep 11, 2025
Upper · Passed
Assembly amendments concurred in. (Ayes 40. Noes 0. Page 2918.) Ordered to engrossing and enrolling.
upper
Sep 11, 2025
Upper · Passed
From committee: That the Assembly amendments be concurred in. (Ayes 5. Noes 0. Page 2940.)
upper
Sep 10, 2025
Upper · Passed
From committee: Be re-referred to Com. on REV. & TAX. pursuant to Senate Rule 29.10(d). (Ayes 3. Noes 0. Page 2759.) Re-referred to Com. on REV. & TAX.
upper
Sep 10, 2025
Committee
Re-referred to Com. on RLS. pursuant to Senate Rule 29.10(d).
upper
Sep 9, 2025
Assembly · Passed
Assembly Vote: pass (79-0)
assembly
Sep 9, 2025
Introduced
In Senate. Concurrence in Assembly amendments pending.
upper
Sep 9, 2025
Lower · Passed
Read third time. Urgency clause adopted. Passed. (Ayes 80. Noes 0. Page 3077.) Ordered to the Senate.
lower
Sep 4, 2025
Lower · Passed
Read third time and amended.
lower
Aug 29, 2025
Lower · Passed
From committee: Do pass. (Ayes 15. Noes 0.) (August 29).
lower
Jul 17, 2025
Lower · Passed
Read second time and amended. Re-referred to Com. on APPR.
lower
Jul 17, 2025
Lower · Passed
From committee: Do pass as amended and re-refer to Com. on APPR. (Ayes 5. Noes 0.) (July 14).
lower
Jun 30, 2025
Lower · Passed
From committee with author's amendments. Read second time and amended. Re-referred to Com. on REV. & TAX.
lower
Jun 9, 2025
Committee
Referred to Com. on REV. & TAX.
lower
Jun 3, 2025
Senate · Passed
Senate Vote: pass (39-0-1)
senate
Jun 3, 2025
Upper · Passed
Read third time. Urgency clause adopted. Passed. (Ayes 39. Noes 0. Page 1467.) Ordered to the Assembly.
upper
May 23, 2025
Upper · Passed
From committee: Do pass. (Ayes 6. Noes 0. Page 1208.) (May 23).
upper
Apr 9, 2025
Upper · Passed
From committee: Do pass and re-refer to Com. on APPR. (Ayes 5. Noes 0. Page 740.) (April 9). Re-referred to Com. on APPR.
upper
Apr 2, 2025
Upper · Passed
From committee with author's amendments. Read second time and amended. Re-referred to Com. on REV. & TAX.
upper
Mar 5, 2025
Committee
Referred to Com. on REV. & TAX.
upper
Feb 20, 2025
Introduced
Introduced. Read first time. To Com. on RLS. for assignment. To print.
upper
1 primary · 13 co-sponsors

Sponsors