4.—(1) Subject to regulations 5 to 9 an application fee is to be determined as follows—
(a)£350 for each application, and
(b)an additional amount up to a maximum of £7,500 calculated by reference to the size of the construction area as follows—
(i)£70 for each 0.1 hectare or fraction of 0.1 of a hectare, for the first 0.5 hectare;
(ii)£50 for each 0.1 hectare or fraction of 0.1 of a hectare, from 0.5 hectare up to and including 1.0 hectare;
(iii)£20 for each 0.1 hectare or fraction of 0.1 of a hectare, from 1.0 hectare up to and including 5.0 hectares;
(iv)£10 for each additional 0.1 hectare or fraction of 0.1 of a hectare in excess of 5.0 hectares.
(2) In this regulation “construction area” means—
(a)the area of land identified on a plan accompanying an application for planning permission(1), or
(b)if an application for planning permission has not been made, the area of land on which construction work has commenced or is proposed to be commenced.
“Planning permission” is defined in paragraph 8(4) of Schedule 3.