Eligible housing costs
11.—(1) Subject to the following provisions of this regulation, housing benefit shall be payable in respect of the payments specified in regulation 12(1) (rent) and a claimant’s maximum housing benefit shall be calculated under Part 7 (amount of benefit) by reference to the amount of his eligible rent determined in accordance with regulations 12(3) and (7) and 13 (rent and maximum rent).
(2) Where any payment for which a person is liable in respect of a dwelling and which is specified in regulation 12(1) (payments of rent for which housing benefit is payable), is increased on account of—
(a)outstanding arrears of any payment or charge; or
(b)any other unpaid payment or charge,
to which paragraphs (1) to (3) of that regulation or Schedule 1 (ineligible service charges) refer and which is or was formerly owed by him in respect of that or another dwelling, a rent rebate or, as the case may be, a rent allowance shall not be payable in respect of that increase.