(1)In relation to any deduction under section 251, the Treasury may make regulations for—
(a)restricting or reducing the amount of expenditure for which the deduction is allowable,
(b)excluding entitlement to the deduction in such cases as may be specified in, or determined in accordance with, the regulations,
(c)determining who is (and is not) entitled to the deduction if different persons have different interests in land that consists of or includes the whole or part of a building containing one or more dwelling-houses,
(d)making apportionments if the property business is carried on by persons in partnership or an interest in land is beneficially owned by persons jointly or in common.
(2)The apportionments that may be made include apportionments to persons within the charge to income tax.
(3)Regulations under this section may—
(a)make different provision for different cases, and
(b)contain incidental, supplemental, consequential and transitional provision and savings (including provision as to appeals in relation to apportionments mentioned in subsection (1)(d)).