(1) The Secretary must (if required), and may (if permitted), redetermine the rent for a holding if a provision of this Act or the regulations requires or permits the Secretary to redetermine rent following a change to the area, purposes or conditions of the holding (for example, under section 4.3 and Divisions 7.2 and 7.3).
(2) The following provisions apply if the Secretary is required or permitted to redetermine the rent for a holding in other circumstances--(a) subject to paragraphs (b) and (c), the Secretary may redetermine the rent as often as the Secretary considers appropriate or as required by the regulations unless the holding's provisions provide differently,(b) the rent must be redetermined at least once every 5 calendar years,(c) the rent for a holding cannot be redetermined more than once in each calendar year.
(3) The Secretary must give the holder of a holding written notice of any redetermination of rent made by the Secretary. The notice may contain any other information (including in relation to the making of objections) as the Secretary considers it appropriate to include.
(4) The redetermined rent cannot take effect unless the written notice is given.