The cost towards which contributions may be made under such a scheme shall not exceed, for any one dwelling—
in respect of a dwelling in Greater London, £10,000.
elsewhere, £7,500,
or such other amount as may be prescribed by order of the Secretary of State made with the consent of the Treasury.
An order under this section—
may make different provision in respect of different cases or descriptions of case, including different provision for different areas, and
shall be made by statutory instrument which shall be subject to annulment in pursuance of a resolution of either House of Parliament.
In this section "house" includes a flat.