The local housing authority may pay reinstatement grant in respect of the qualifying work in a single sum on completion of the work or by instalments.
No instalments shall be paid if the instalment, together with any amount previously paid, would exceed the appropriate percentage of the cost of so much of the qualifying work as has been executed at that time.
The authority shall pay reinstatement grant in respect of an associated arrangement when payment in respect of the expenditure incurred in entering into the arrangement falls to be made.