Cal. Health & Safety Code § 33215

(a) If all of the territory included within a project area, including any noncontiguous territory within the project area, selected pursuant to Section 33322 or 34004 is subsequently annexed to a city or included within the boundaries of a new city, the territorial jurisdiction of the creating agency over all of the territory in that project area may be transferred from the creating agency to a receiving agency pursuant to this section.
(b) The legislative body of the community of the receiving agency, in which the territory described in subdivision (a) is located, may unilaterally transfer the territorial jurisdiction described in subdivision (a) if that legislative body agrees to reimburse the community of the creating agency for all costs incurred by the community of the creating agency in conducting the transfer and adopts, or has adopted, both of the following ordinances:
1. (1) An ordinance pursuant to Section 33101 declaring the need for an agency to function in the city.
2. (2) An ordinance adopting the same redevelopment plan for the project area that was previously adopted by the legislative body of the creating agency or an ordinance adopting that redevelopment plan, with amendments. However, no amendment to a redevelopment plan may be adopted if the amendment would violate any agreement entered into by the creating agency or its legislative body, as determined by that legislative body, prior to the effective date of the transfer of territorial jurisdiction, as determined pursuant to subdivision (c).
(c) The effective date of the transfer of territorial jurisdiction is the first day of the fiscal year that begins following the effective date of the later enacted of the ordinances adopted pursuant to subdivision (b).
(d) The transfer of territorial jurisdiction shall have all of the following effects on and after the effective date of the transfer of territorial jurisdiction, as determined pursuant to subdivision (c):
1. (1) The receiving agency and its legislative body shall have all of the rights, powers, and responsibilities provided by this part with respect to the project area and the redevelopment plan for that project area.
2. (2) The debts and any other obligations of the creating agency or its legislative body in connection with the project area or the redevelopment plan for that project area shall be assumed by the receiving agency.
3. (3) For the purposes of this part, including Section 33670, the redevelopment plan for the project area for which territorial jurisdiction is transferred from the creating agency to the receiving agency pursuant to this section shall be considered to have been adopted by the legislative body of the receiving agency on the date the redevelopment plan was originally adopted by the legislative body of the creating agency.
(e) The creating agency, the receiving agency, and their respective legislative bodies may enter into any agreements which those entities mutually determine to be necessary or desirable to facilitate the transfer of territorial jurisdiction provided for by this section.