Converting a basement is a great way to gain extra space

Using the space beneath your home is a great way to gain extra room as you’re effectively adding an entire floor to the footprint of the house. Converting an existing cellar is the easiest option, but it is also possible to dig out a new basement. Converting – which involves waterproofing, adding windows and possibly improving access – comes in at around £15,000.

Digging out is a different ball game, with prices starting at £80,000. Christopher Bramwell, director at Savills in Chiswick, says a basement conversion can make financial sense. ‘Moving is pricey, it can be as high as £50,000 on expensive properties. That kind of money pays for half the conversion, and it will also add value to the resale,’ he says. Basements are naturally soundproof so they’re ideal for family rooms, kitchen-diners or a home cinema.

Words: Justine Roffey and Trish Lorenz  Image: Andrew Hayes Watkins