Cal. Rev. & Tax. Code § 63.2
(a) Notwithstanding any provision of this chapter, beginning on and after February 16, 2021, a change in ownership shall not include, in whole or in part, any of the following purchases or transfers for which a claim is filed:
(1) The purchase or transfer of real property that is the principal residence of an eligible transferor in the case of a purchase or transfer between parents and their children or between grandparents and their grandchildren, if all of the parents, other than stepparents, of that grandchild or those grandchildren, who qualify as the children of the grandparents, are deceased as of the date of purchase or transfer.
(2) The purchase or transfer is of a family farm of an eligible transferor in the case of a purchase or transfer between parents and their children or between grandparents and their grandchildren, if all of the parents, other than stepparents, of that grandchild or those grandchildren, who qualify as the children of the grandparents, are deceased as of the date of purchase or transfer.
(d) The new taxable value of the family home or family farm shall be the sum of both of the following:
(2) The applicable of the following amounts:
(e) As used in this section, the following terms have the following meanings:
(1) “Children” means any of the following:
(8) “Real property” means real property as defined in Section 104. Real property does not include any interest in a legal entity. For purposes of this section, real property includes any of the following:
(f)
(1) The State Board of Equalization shall prescribe, after consultation with the California Assessors’ Association, a form for claiming eligibility. Except as provided in paragraph (3), any claim under this section shall be filed as follows:
(2)
(A) Notwithstanding subparagraph (B) of paragraph (1), and subject to subparagraph (C) of this paragraph, a claim shall be deemed to be timely filed within three years after the date of mailing of a notice of supplemental or escape assessment, issued as a result of transfer of real property for which the claim is filed, when all of the following apply:
(3) In the case in which the real property subject to purchase or transfer has not been transferred to a third party, a claim for exclusion under this section that is filed subsequent to the expiration of the filing periods set forth in paragraph (1) shall be considered by the assessor, subject to both of the following conditions:
(B) Under any exclusion granted pursuant to that claim, the adjusted full cash value of the subject real property in the assessment year described in subparagraph (A) shall be the adjusted base year value of the subject real property in the assessment year in which the excluded purchase or transfer took place, factored to the assessment year described in subparagraph (A) for both of the following:
(g)
(h)