I know this is a how long is a piece of string type question... but
We live in a decent size 3 bed semi. We have a porch at the back of kitchen and a conservatory at the back of the dining room. I'd like to knock them all into one big room but I have no idea what sort of cost might be involved. There wouldn't be much plumbing to do and the only appliance we'd need is a new oven/hob. We'd not look to do it on the cheap, just decent quality.