Britain's best-loved TV property and interior experts share the secrets of adding value to a property in the most budget-friendly way possible. Laurence Llewelyn-Bowen, Linda Barker, Scarlette Douglas, Laura Hamilton and Gary McCausland present a number of projects, including converting a garage into a bedroom or cinema room, installing a home office in the garden, and creating an open-plan living space by knocking down walls between kitchens and sitting rooms. What's more, with each idea Craig Phillips explores the DIY route, working out how much the viewer can do themselves to save money - and which bits they should leave to the professionals.