77. Party walls

(1) In the construction of an instrument referring to a "party wall", that expression means (unless the contrary intention appears) a wall severed vertically and longitudinally with separate ownership of the severed portions, and with cross-easements entitling each of the persons entitled to a portion of the wall to have its building supported by the whole wall.
(2) Where real property is transferred by a person entitled to create easements in relation to a wall built on the common boundary of that real property and adjoining real property, and the transfer describes the wall as a party wall, then the transfer, when registered, operates to create an easement for a party wall.