Last week, RIBA announced the first two homes shortlisted for this year's House of the Year Award: Antsy Plum by Coppin Dockray and Outhouse by Loyn & Co Architects. Antsy Plum is a 1960s modernist house located in Antsy, Wiltshire, renovated to reduce carbon emissions by 80 percent; Outhouse, located in Forest of Dean, Gloucestershire, is a partly subterranean concrete structure on a sloped site.