9. –
(1) The total amount of grant payable by the administering agency in respect of an application shall be the amount properly charged for the works carried out or £500, whichever is the lesser.
(2) Subject to paragraph (1), an administering agency shall have power, with the consent of the Scottish Ministers, to specify a grant-calculation basis, expressed in terms of amounts per unit of measurement, for any category or combination of categories of works.
(3) Where the applicant qualifies for grant by virtue only of regulation 7(1)(a), the maximum amount of grant and the grant-calculation basis applicable to any category of works, shall be one-quarter of the amount or basis which would otherwise apply.