Side Return Extension designed for walk-in mid-terrace Victorian house. Party Wall Agreement reached to built along party wall boundary, thus gaining width. Neighbour can exploit this new 300mm cavity wall to build their side extension. New kitchen will be in existing dining to solve a common issue with extensions; the dining room becomes just a 'wide corridor' with no other function. The existing kitchen and extension to be lounge/dining with garden view. The existing rear wall of main house entirely open up to create one open space.