I'm looking at putting a double storey extension on the side of my house and possibly wrapping it around the back too. I've spoken to a local builder who quoted a rough guide of £1k per sq m but said it would be best to get in an architech and send the plans out for costings.
Any idea how much this would cost? Extension would be approx 8m x 1.5m , just enough to make the existing rooms on that sideof the house larger. The back would consist of adding a second floor above the existing kitchen.
Any other input would be appreciated, never done anything like this before so don't know where to start!