So... we're having our (useless) garage converted into a room by a local builder. He's done about a week and a half's work on it so far and as it's an integral garage he's got a front door and garage key.
This afternoon I returned home at about 4pm to find he'd already gone for the day and left the front door key in the door!!!
Our driveway is only slightly longer than a car so it was really obvious from the road.
What would you do?