Graham Trotter
hello It does depend on exactly what specification you want.Is it rendered,facework,just the shell built or new kitchen and bathroom etc etc.The best way forward is to have a architect do you a drawing and then get 3 builders to quote from the drawing. Or if you wanted a very rough idea i would say the single storey would be in the region of £30k to £35 and a double would be £75k plus.
