Green Building, also known as green construction or sustainable building, is the practice of creating structures and using processes that are environmentally responsible and resource-efficient throughout a building's life-cycle, ie from siting to design, construction, operation, maintenance, renovation, and deconstruction. This practice expands and complements the classical building design concerns of economy, utility, durability, and comfort.

Comparing to conventional buildings, green buildings uses less water, optimizes energy efficiency, conserves natural resources, generates less waste and provides healthier spaces for occupants.

Although new technologies are constantly being developed to complement current practices in creating greener structures, the common objective is that green buildings are designed to reduce the overall impact of the built environment on human health and the natural environment by
(a) Efficiently using energy, water, and other resources