Green building, also known as sustainable building or high-performance building, is the practice of designing, constructing, and operating buildings in ways that minimize environmental impact, conserve natural resources, and promote the health and well-being of occupants. It encompasses the entire lifecycle of a structure, from site selection and material sourcing through construction, operation, maintenance, renovation, and eventual demolition or deconstruction. Green building integrates principles from architecture, engineering, environmental science, and public health to create structures that use energy, water, and materials more efficiently than conventional buildings.
The modern green building movement gained momentum in the 1990s with the establishment of certification systems such as LEED (Leadership in Energy and Environmental Design) in the United States, BREEAM (Building Research Establishment Environmental Assessment Method) in the United Kingdom, and the Living Building Challenge. These frameworks provide standardized metrics for evaluating a building's environmental performance across categories including energy efficiency, water conservation, indoor environmental quality, materials selection, and site sustainability. Today, green building has evolved from a niche concern into a mainstream industry practice, driven by rising energy costs, climate change mitigation goals, and growing evidence that sustainable buildings deliver superior financial returns over their lifetimes.
Beyond environmental benefits, green buildings offer significant economic and social advantages. Studies consistently show that green-certified buildings command higher rents, experience lower vacancy rates, and have higher resale values compared to conventional buildings. Occupants of green buildings report improved comfort, better air quality, and enhanced productivity. At a broader scale, the green building sector plays a critical role in addressing climate change, as buildings account for approximately 40 percent of global energy consumption and roughly one-third of greenhouse gas emissions. Governments worldwide have responded with increasingly stringent building energy codes, incentive programs, and net-zero building mandates that are reshaping how the built environment is designed and constructed.
