This design for a £1.5m block of 12 key worker flats in Lambeth, south London, is the first fruit of Bill Dunster Architects' collaboration with PRP. It uses low-energy ideas pioneered in Dunster's BedZED scheme in Sutton, also in south London.

The block forms part of the St Matthews Estate developed by Presentation housing association. Mulalley & Co is main contractor, Robinson Associates is structural engineer, Engineering Design Associates is services engineer and Philip Pank Partnership is the client's agent.