The new FEES energy standard splits residential development into two sections. End of terrace and detached houses on the one hand, and flats and mid-terraced houses on the other. But there is an important type that is ignored. The FOG (Flat Over Garage). This is a very useful type in urban design terms and is currently usually classified as a ‘flat’ since it is usually one storey of accommodation above a garage. If this classification remains then FOG’s will be required to meet a much higher energy standard than is appropriate to the type. FOG’s are essentially bungalows in the air, with a lot of exposed surface area, often including the underside of the ground floor. This is a problem that the BRE/DCLG needs to address in the forthcoming Part L and SAP legislation.