Square One Architects have been involved in the design for a major redevelopment of a single-family house in East Sheen. The client’s aim was to maximise the space at their disposal without subtracting too much from a lovely garden. This project includes a side and rear extension at ground floor level, a first-floor side infill and a loft extension. The new spaces replaced two small and dark existing rooms previously used as kitchen and dining areas. A large and bright open-plan kitchen/living/dining space opens to direct views of the garden and a patio which is shared with the side extension. The side extension is used as a self-contained flat for guests and extended family members. During the daylight analysis and simulation, it became apparent that two skylights and large doors and windows were required to achieve high levels of daylight in the main family space.