Has anyone added a complete floor to a bungalow? We are looking to move into our local town (in a village at the mo). Lots of 50/60's type bungalows come up with good size plots (which we are after). I have seen that under permitted development you can add a story without planning subject to area. I just don't have a clue about cost! taking the roof off, adding an upstairs. Structural and building costs only not things like new kitchen etc. We are in the south west it that helps. I would love to hear some positive stories!