In this Part—
“house” includes any yard, garden, outhouses and appurtenances belonging to the house or usually enjoyed with it;
“occupying tenant” has the same meaning, in relation to a dwelling which consists of, or forms part of, the house concerned, as it has in Part VII (improvement notices);
“owner” in relation to premises—
means a person (other than a mortgagee not in possession) who is for the time being entitled to dispose of the fee simple in the premises, whether in possession or reversion, and
includes also a person holding or entitled to the rents and profits of the premises under a lease of which the unexpired term exceeds three years;
“person having control”, in relation to premises, means the person who receives the rack-rent of the premises (that is to say, a rent which is not less than 2/3rds of the full net annual value of the premises), whether on his own account or as agent or trustee for another person, or who would so receive it if the house were let at such a rack-rent.