Part 3
The conditions specified in this Part are that—
(a)
the owner of the lands and heritages is prohibited by law from occupying the unoccupied part or allowing it to be occupied;
(b)
the unoccupied part of the lands and heritages is kept vacant by reason of action taken by or on behalf of the Crown or any local or public authority with a view to prohibiting the occupation of that part or to acquiring it.