The document discusses two case studies of buildings with carbon reduction features. The first is a Passivhaus certified building built with timber frame construction, high performance windows and doors, air tightness measures, and rainwater harvesting. The second is a planned development that aims to reduce carbon by 82% and total energy by 71% through an air source heat pump, mechanical ventilation, solar hot water, improved insulation, reducing thermal bridges, and high performance windows and doors.