The word "building", for the purposes of—
Part I of this Act, and
any other enactment (whether or not contained in this Act) that relates to building regulations, or that mentions "buildings" or "a building" in a context from which it appears that those expressions are there intended to have the same meaning as in Part I of this Act,
means any permanent or temporary building, and, unless the context otherwise requires, it includes any other structure or erection of whatever kind or nature (whether permanent or temporary).
In subsection (1) above, "structure or erection" includes a vehicle, vessel, hovercraft, aircraft or other movable object of any kind in such circumstances as may be prescribed (being circumstances that in the opinion of the appropriate national authority justify treating it for those purposes as a building).
For the purposes mentioned in subsection (1) above, unless the context otherwise requires—
a reference to a building includes a reference to part of a building and
a reference to the provision of services, fittings and equipment in or in connection with buildings, or to services, fittings and equipment so provided, includes a reference to the affixing of things to buildings or, as the case may be, to things so affixed.
Nothing in this section applies in relation to section 120D or 120I.