In this division:
"dwelling house" includes—
(a) a garden or portion of ground attached to, and usually occupied with, a dwelling house, or otherwise required for the amenity or convenience of a dwelling house; and
(b) a part of a building occupied as a separate dwelling.
"representation", in relation to an intestate, means probate of the will, or administration (including administration with the will of the intestate annexed) of the estate, of the intestate.