Revenue and Taxation Code § 5082

For purposes of this article, the “date of apportionment” is the earliest of the following times:

(a) The date the conveyance to the acquiring entity or the final order of condemnation is recorded.

(b) The date of actual possession by the acquiring entity.

(c) The date upon or after which the acquiring entity may take possession as authorized by an order for possession or by a declaration of taking.