Yeah, sorry about that. Was picking a figure out of the air as none of us have any idea on whether the garage currently has a door into the house, what’s under it’s floor, where any services run if they are in the way of new openings, how you are going to heat it, what windows are required, what you want doing with the existing vehicular door opening and whether old bricks need to be matched, how much headroom for a new insulated roof, whether you want roof lights, if you are inside London Congestion Zone, whether your current consumer unit has capacity for a couple of new circuits, do you need a gas supply running in for a cooker, what finish you require or a dozen other things. But I’m willing to take a punt and stick with my original quote, but you’ll have to move out for six months, leave me your car keys and let me have a go on your wifebikes. 🙂