* A recent RAC survey showed that 60% of people who have a garage actually use it for their car.
* If your garage is under-utilised, it will be quicker and cheaper to convert it than to build an extension from scratch.
* If you do convert, dont compromise on storage space. Its great in a family house to have somewhere to keep the barbecue, lawn mower and other gear, says Sarah Beeny. But if you turn every outside storage space into living space, you just end up with the kids bikes in the hall.