(a) Any petition filed under section 836 of this title shall be promptly considered by the Rent Control Officer. Pursuant thereto, he shall hold a hearing, which shall be conducted in accordance with regulations promulgated under clause (1) of section 833 of this title. At this hearing, the landlord and tenant shall be given an opportunity to be heard or to file written statements, with due regard to be given to the utility and relevance of the information offered and the need for expedition.
(b) After the hearing referred to in subsection (a) of this section, the Rent Control Officer shall make findings of fact and issue an appropriate order.
(c) Any adjusted maximum rent ceiling ordered under this section shall be the maximum rent ceiling for the accommodations subject thereto, except that, if the order of adjustment is stayed or set aside by the Commissioner of Housing, Parks and Recreation or the court, the maximum rent ceilings theretofore applicable to such accommodations under this subchapter shall remain in full force and effect.