Path toward net-zero buildings: a natural capital assessment framework

Building rating systems lack a methodology for assessing building’s potential for becoming self-sufficient by using local resources. There is a gap in the literature for linking natural capital assessment and net-zero buildings. This paper presents a methodology for assessment of natural capital to achieve net-zero targets in buildings. The developed methodology is demonstrated through a Living Building Challenge^® registered building. The contribution of water, energy and building materials is discussed, and various scenarios are evaluated on how the building can become net-zero over its life cycle by using local natural resources. Results show that the building can generate 100% of its energy and 92% of its water on-site and can become net-zero with the help of materials recycling and off-site carbon offset program.