(a) The administrator may revoke any order or determination based upon any statement or entry false in any material respect in any document or report submitted in any proceeding before the Division of Housing and Community Renewal, or required to be kept or filed under the Rent Law or these regulations or any requirements thereunder.

(b) Where after the State Rent Commission or the administrator has granted a certificate of eviction and a tenant voluntarily removes from a housing accommodation, or has been removed therefrom by action or proceeding to evict from or recover possession of a housing accommodation, and the landlord or any successor landlord of the premises does not use the housing accommodation for the purpose specified in such certificate of eviction, the vacated accommodation or any replacement or subdivision thereof shall, unless the administrator approves such different purpose, be deemed a housing accommodation subject to control, notwithstanding any definition of that term in these regulations to the contrary. Such approval shall be granted whenever the administrator finds that the failure or omission to use the housing accommodation for the purpose specified in such certificate was not inconsistent with the purposes of the Rent Law and these regulations, and would not be likely to result in the circumvention or evasion thereof.