In this Part the expressions "lessee", "owner" "person having an estate or interest", "person having control", and "person managing" shall be construed as follows.
"Lessee" includes a statutory tenant of the premises, and references to a lease or to a person to whom premises are let shall be construed accordingly.
"Owner"—
"Person having an estate or interest" includes a statutory tenant of the premises.
"Person having control" means the person who receives the rack-rent of the premises, whether on his own account or as agent or trustee of another person, or who would so receive it if the premises were let at a rack-rent (and for this purpose a "rack-rent" means a rent which is not less than 2/3rds of the full net annual value of the premises).
"Person managing"—