I think ts mainly superficial work- new kitchen, bathrooms, and probably knocking through some walls in the loft conversion (currently 3 small rooms in the loft), as well as replacing the staircase that leads up to the loft (very narrow space, thinkin of replacing it with a spiral staircase). I'm trying to coordinate with a builder so I can get a rough estimate of cost before we put in an offer. To be honest I'm just a bit scared at the thought of it all, and need some reassurance please! I was hoping to avoid having to use an architect / designer- is that a big mistake??