These Chiswick residents briefed us to convert two flats into a comfortable 4 bed family house. The streamlined kitchen adjoins a family room that tumbles out onto a courtyard garden. The ground floor was completely remodelled and extended, and we also added a large loft mansard. All bedroom and bathrooms were configured to maximise space and light. The result is a slick, well-proportioned space with lots of clever storage, from custom window seats to hidden cupboards.