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—

  1. a

     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 in reversion, and

  2. b

     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.