London-based architect Alex Michaelis takes a boundary-pushing approach to sustainability as one half of design duo Michaelis Boyd. Best known for giving an eco-makeover to the London home of former Prime Minister David Cameron—which included installing a wind turbine on the roof—the pair have taken on the interiors of the monumental Battersea Power Station redevelopment project.

Here, director Emile Rafael takes us into the architect's semi-subterranean home, where innovative design nestles an expansive family-friendly house for five—replete with fireman's pole and banister slide—into a space previously occupied by a domestic garage.