In this Part—
“house” includes any yard, garden, outhouses and appurtenances belonging to the house or usually enjoyed with it;
“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 absolute in the premises, whether in possession or in 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.