Transition provisions; applicability of chapter.

Chapter 13 [of this title] shall apply to any tax sale made or instituted, and any agreement executed between the District and any third party with respect to such sale, before January 1, 2001. This chapter shall apply to any tax sale made or instituted (or which could have been made or instituted), and any agreement executed between the District and any third party with respect to such sale, after December 31, 2000.