Interesting! I think the householder is incorrect from an addressing viewpoint: the NSUL postcode layer only shows one postcode here (LS13 3JE - the Nora Place postcode) and a search for "19 Nora Terrace" Leeds returns no results. I've added Nora Place housenumbers, street and postcode to the buildings. Based on the sign in the photograph I've added an entrance node with number and street but no postcode. If other houses  on this side of Nora Terrace display an odd number in this sequence I'd suggest doing the same.