| I did a similar thing a couple of years back, although it was on the first floor so the crew had plenty of room to work from the attic.
From memory it was about £4k but that included some other decorating work. I've no idea whether that was reasonable or not but the other quotes were coming in twice as high.
If you're not fussed about the overhang, what about just putting in an "opening" in the wall about half the width of the room? You would still be able to move the slut between rooms and it would almost be a diy job.
Whatever you do, please do not be tempted to lift up the floorboards and hide the rubble under there (as the previous owner of my house did). Your subfloor will rot in about 5 years time and you can kiss another £5k goodbye.
Oh dear, I appear to have come over all sensible.....
Chi | 
Hybrid Mode
