If u imagine a shoe box shape with the shorter sides facing you
.. you walk down an alley as it is tucked behind other buildings
So looking down at the frount is a garden overlooked by flats - back of -which are in a big house which faces main road . Then the house with a side return , then back house is a yard .
The vertical walls belong to the house left and right
The wall that is the derelict building is attatched to those two walls and this wall will be knocked down ( replaced by wood fence or in best case senerio oart of it retained )
So basically the house is tucked away in its own little courtyard but the end wall will be removed . I wd send pic but I don't know how do on mumsnet !