Where during a
financial year —
(a) land
that was not rateable becomes rateable land; or
(b)
rateable land becomes land that is not liable to rates,
the owner of that land
—
(c) is
liable for rates proportionate to the portion of the year during which the
land is rateable land; or
(d) is
entitled to a refund of an amount proportionate to the portion of the year
during which the land is not rateable land,
as the case requires.