(1) In determining the fee in relation to an application involving the erection of a building, the Planning Secretary must make his or her determination by reference to a genuine estimate of the capital investment value of the application.
(2) In determining the fee in relation to an application involving the carrying out of a work, the Planning Secretary must make his or her determination by reference to a genuine estimate of the construction costs of the work.
(3) In determining the fee in relation to an application involving the demolition of a building or work, the Planning Secretary must make his or her determination by reference to a genuine estimate of the costs of demolition.
(4) In determining the fee in relation to the concept component of a staged application, the Planning Secretary may make any necessary assumptions about the detail of the future stages of the development or infrastructure.