That has helped Phil - especially the lie down.
The definition of "house" was from the Housing Act 2004, in full:
"99 Meaning of “house” etc.
In this Part—
“dwelling” means a building or part of a building occupied or intended to
be occupied as a separate dwelling;
“house” means a building or part of a building consisting of one or more
dwellings; and references to a house include (where the context permits) any yard,
garden, outhouses and appurtenances belonging to, or usually enjoyed with, it
(or any part of it)."
It would be nice and simple if the FSO did not cover a "building" used as a SPD. Then we could use that lovely building definition in Circ 5:
The definition of "building" has been interpreted variously by the courts for purposes of other legislation and is therefore subject to some uncertainty. However, to ensure uniformity in the administation of the Act, it is considered desirable that a building should generally be regarded as extending from its lowest level to roof-top and that the horizontal limits should be regarded as set by party/separating walls through which there is no internal communication with neighbouring buildings. Doors provided in party walls solely as fire exits should not be regarded as a means of internal communication. Nor is it considered that the effect of imperforate floors extending over the whole area of a building is to create two (or more) separate buildings, notwithstanding that there may be no internal means of communication between the parts.
Unfortunately it isnt that simple.