Amount of housing costs
15.—(1) Subject to the provisions of this regulation and [regulations 16 and 18], a parent’s housing costs shall be the aggregate of the eligible housing costs payable in respect of his home.
(2) Where a local authority has determined that a parent is entitled to housing benefit, the amount of his housing costs shall, subject to paragraphs (4) to (9), be the weekly amount treated as rent under [regulations 12 and 80 of the Housing Benefit Regulations or, as the case may be, regulations 12 and 61 of the Housing Benefit (State Pension Credit) Regulations] (rent and calculation of weekly amounts) less the amount of housing benefit.
(3) Where a parent has eligible housing costs and another person who is not a member of his family is also liable to make payments in respect of the home, the amount of the parent’s housing costs shall be his share of those costs [but, where that other person does not make those payments in circumstances where head (a) of paragraph 4(2) of Schedule 3 applies, the eligible housing costs of that parent shall include the housing costs for which, because of that failure to pay, that parent is treated as responsible under that head].
[[(4)] A parent shall be treated as having no housing costs where he is a non-dependant member of a household and is not responsible for meeting housing costs except to another member, or other members, of that household.]
(4) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
(5) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
(6) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
(7) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
(8) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
(9) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .