(1) This section applies if a parcel of land becomes rateable on or after a relevant date (the 1st relevant date ).
(2) The commissioner must—
(a) determine the unimproved value of the parcel of land as at the 1st relevant date; and
(b) if necessary, redetermine the unimproved value of the parcel as at each relevant date after the first relevant date when it was not determined.
(3) A determination under subsection (2) (a) applies to rates for the period—
(a) beginning on 1 July in the calendar year in which the relevant date falls; and
(b) ending on 30 June in the next calendar year.
(4) A redetermination under subsection (2) (b) for a parcel of land applies to rates for the period—
(a) beginning on 1 July in the calendar year in which the relevant date as at which the redetermination is made falls; and
(b) ending on 30 June in the next calendar year.