 The Emergy Footprint model can quantitatively analyze the ecological effect of Housebuilding's life cycle and shows that reducing energy consumption and carbon dioxide emissions in the operation and maintenance stage is key to lowering the life cycle Emergy Footprint, with an ecological break-even point at a service life of 36.73 years for Housebuildings. This article was authored by Ming Yang, He, Yang Wang, and Hao Yan Ma.