The roof space could be the perfect place for a home office.

Opening up the roof space (especially if there is insufficient height to create a loft conversion) and creating an open mezzanine can be a great way to find new space. In this example, which cost £20,000-£30,000, the workspace has ample room for desks, computers, printers and other necessary items, while pigeon-hole shelving on a wall behind (not shown) provides functional storage. The workspace is separate enough to keep paperwork out of sight, but still feels part of the home.

In the gallery: Skylights positioned at various levels ensure the right amount of natural light, with desk spot lamps for task lighting; A staircase from the living area to the home office subtly links both spaces.