A house we are considering buying has a seperate residence below it. There is currently no internal staircase at all so we would want to add one to make it one big house rather than two seperate residences.
Has anyone any idea at all what sort of cost would be involved in this? I'm no builder but I'm pretty sure that you can't just hack a big hole in the floor without structural considerations?
As it's not our house its not possible to get any quotes done so it's all a bit of a guess.
Has anyone had any experience with this at all?