93.—(1) Where it is impracticable for the relevant authority to make a decision on a claim for a rent allowance within 14 days of the claim for it having been made and that impracticability does not arise out of the failure of the claimant, without good cause, to furnish such information, certificates, documents or evidence as the authority reasonably requires and has requested or which has been requested by the Secretary of State, the authority shall make a payment on account of any entitlement to a rent allowance of such amount as it considers reasonable having regard to—
(a)such information which may at the time be available to it concerning the claimant's circumstances; and
(b)any relevant determination made by a rent officer in exercise of the Housing Act functions.
(2) The notice of award of any payment on account of a rent allowance made under paragraph (1) shall contain a notice to the effect that if on the subsequent decision of the claim the person is not entitled to a rent allowance, or is entitled to an amount of rent allowance less than the amount of the payment on account, the whole of the amount paid on account or the excess of that amount over the entitlement to an allowance, as the case may be, will be recoverable from the person to whom the payment on account was made.
(3) Where on the basis of the subsequent decision the amount of rent allowance payable differs from the amount paid on account under paragraph (1), future payments of rent allowance shall be increased or reduced to take account of any underpayment or, as the case may be, overpayment.