381. Rights to repair or do works affecting a party wall.

Where lands of different owners1 adjoin and at the line of junction2 those lands are built on or a boundary wall, being a party fence wall3 or the external wall4 of a building, has been erected, a building owner5 has the following rights6:

  1.  

    (1)     to underpin7, thicken or raise a party structure8, a party fence wall, or an external wall which belongs to the building owner and is built against a party structure or party fence wall9;

  2.  

    (2)     to make good, repair, or demolish and rebuild, a party structure or party fence wall in a case where such work