Pushing themselves to buy a bigger house for their growing family in Surrey, Heidi and Matt Stone were always desperate to start on the living room. ‘We moved from a three-bedroom semi on a main road to a four-bedroom Victorian semi in a much quieter spot around the corner in Addlestone five years ago with our son Max, now nine, knowing it needed plenty of work.’ Heidi, a teacher, was also pregnant with second son, Jackson, now four, and the next couple of years were a blur with a new baby and work. ‘Because we had upgraded, we had a limited budget, so had to be careful about what we bought and what order we did things in. Matt, an electrician, is incredibly handy, and I’m not so bad myself,…