s 51 Recovery of costs and expenses by instalments
51.—(1) When the Board has incurred costs and expenses in or about the execution of any work, which are, under this Act, payable by or recoverable from an owner, the Board may —(a) recover those costs and expenses in the manner provided in section 50; or (b) if it thinks fit, make an arrangement with the owner for the payment of such instalments as will be sufficient to defray the whole amount of the costs and expenses with interest thereon at the prescribed rate, within a period not exceeding 10 years. (2) If on the date appointed for payment by any such arrangement, there is default in payment of any instalment or interest, the whole of the balance then outstanding of that amount, together with any interest in arrears, immediately becomes due and payable and, despite any change in the ownership or occupation of the premises since the date of the arrangement, may be recovered in the manner provided in section 50.