366. Creation of party walls divided vertically.

Where a wall is built on the boundary of two adjoining pieces of land, so that the centre of the wall coincides with the boundary line, the property in the wall follows the property in the land upon which it stands and the wall prima facie is a party wall at common law in the second sense1. It is a question of fact whether a party wall is fairly built half on each side of the boundary, and any minute inaccuracy of measurement will be disregarded