Before the district may issue bonds, the district and any person to whom the board intends that proceeds of the bonds be distributed, including the developer, another owner of land in the district, and any entity acting as a lender to the developer or other landowner for the purpose of a project relating to the district, must enter into a written agreement that:
(1) waives for the term of the agreement the right to a special appraisal with respect to taxation by the district under Subchapters B, C, D, E, F, and H, Chapter 23, Tax Code; and
(2) remains in effect for 30 years and is binding on the parties, on entities related to or affiliated with the parties, and on their successors and assignees.