Just for opinions, let's say there is a mid terrace house, an end terrace and a semi on the same street, in the same row of houses, close to each other. They are in the same size, same decor. End terrace and semi has a meter wide gap on the side and comes with a slightly wide front and back garden.
How much extra would you pay to upgrade from a mid terrace to an end terrace or semi? In this case, is there much difference between an end terrace and a semi to you?