Does property demised by a lease, which does not include the structural roof or the foundations, fall under the definition of a house for the purposes of the Leasehold Reform Act 1967 or would it be a flat under the Leasehold Reform, Housing and Urban Development Act 1993? Otherwise, the demise is over two stories (ground and first floor) and there are no other parts, be it common parts or other residential apartments, which overlap above or under the demise, so the property can therefore be divided vertically from the remainder of the building.