14.—(1) The fee which shall accompany an application for a reference under section 16(10) of the Act (determination of questions by the Secretary of State) is—
(a)where the question is whether plans of proposed work are in conformity with building regulations, an amount equal to half the plan charge fixed by the charging scheme made and published by the local authority concerned, subject to a minimum of £100 and a maximum of £1,000;
(b)where the question is whether the local authority are prohibited from rejecting plans of proposed work by virtue of section 16(9) of the Act, £100.
(2) The fee which shall accompany an application for a reference under section 50(2) of the Act of the question whether plans of proposed work are in conformity with building regulations is an amount equal to half the plan charge fixed by the charging scheme made and published by the local authority to which the plans certificate is or would be given, subject to a minimum of £100 and a maximum of £1,000.
(3) No fee shall be payable in respect of the determination of any question relating to building work of the description in regulation 4.