(1)Subsection (2) applies if—
(a)capital expenditure is or has been incurred in preparing, cutting, tunnelling or levelling land for the purposes of preparing the land as a site for the installation of plant or machinery, and
(b)no allowance could (apart from this section) be made in respect of that expenditure under this Part or Part 2 (plant and machinery allowances).
(2)This Part has effect in relation to the expenditure as if—
(a)the purpose of incurring the expenditure were to prepare the land as a site for the construction of a building, and
(b)the installed plant or machinery were a building.