An urban infill house in London’s Camden Town features newly developed insulated and automated shutters; the hope being that these shutters will become an energy efficiency solution for future retrofit and low-cost housing projects. Designed and built by bere:architects, designer and engineer Max Fordham, and Bow Tie Construction, the scheme was completed in February 2019. The windows are sized and spaced rationally to optimise light without overheating in summer, and the new automated thermal shutters are intended to maintain a constant comfortable internal temperature and to defend against extremes both of external cold and heat. The horizontally sliding shutters constructed from insulated vacuum panels are accommodated within the internal fabric of the building. They are automatically operated by a home technology system, which simplifies the proper use of the shutters and does not rely on occupants’ manual operation. As the shutters are internal, potential complications are easier to note and fix than if external shutters are used. Windows are often the cause of temperature fluctuation, but these reasonably airtight shutters are designed to counterbalance this tendency. The shutters are to be closed on a cold winter night to prevent radiant heat losses ensuring no supplementary heating will be required.