SCHEDULES
SCHEDULE 12

Condition treated as applicable to rebuilding and alterations
Section 80(5).
1
Where the building to be rebuilt or altered is the original building, the amount of gross floor space in the building as rebuilt or altered which may be used for any purpose shall not exceed by more than 10 per cent. the amount of gross floor space which was last used for that purpose in the original building.
2
Where the building to be rebuilt or altered is not the original building, the amount of gross floor space in the building as rebuilt or altered which may be used for any purpose shall not exceed the amount of gross floor space which was last used for that purpose in the building before the rebuilding or alteration.
3
In determining under this Schedule the purpose for which floor space was last used in any building, no account shall be taken of any use in respect of which an effective enforcement notice has been or could be served or, in the case of a use which has been discontinued, could have been served immediately before the discontinuance.
4
1
For the purposes of this Schedule gross floor space shall be ascertained by external measurement.
2
Where different parts of a building are used for different purposes, floor space common to those purposes shall be apportioned rateably.
5
In relation to a building erected after 1st July 1948 which is a building resulting from the carrying out of any such works as are described in paragraph 1 of Schedule 11, any reference in this Schedule to the original building is a reference to the building in relation to which those works were carried out and not to the building resulting from the carrying out of those works.