Where a person ("the owner") has disposed of an interest in a defective dwelling, otherwise than in pursuance of Schedule 20 (repurchase), to an authority possessing compulsory purchase powers and—
he is entitled, subject to the following provisions of this section, to be paid by the local housing authority the amount (if any) by which 95 per cent. of the defect-free value exceeds the amount of the compensation for the disposal.
For the purposes of this section—
but excluding, in either case any amount payable for disturbance or for any other matter not directly based on the value of land.
For the purposes of this section, it shall be assumed that the disposal occurred on a compulsory acquisition (in cases where it did not in fact do so).
Where the compensation for the disposal fell to be assessed by reference to the value of the land as a site cleared of buildings and available for development, it shall be assumed for the purposes of determining the defect-free value that it did not fall to be so assessed.
The amount payable by the local housing authority under this section shall be reduced by the amount of any payment made in respect of the defective dwelling under Schedule 23 (payments for well-maintained houses).
In this section "authority possessing compulsory purchase powers" has the same meaning as a in the Land Compensation Act 1961.