Sustainable development involves making conscious choices to incorporate environmentally beneficial elements when deciding how to use a parcel of land. While buildings and construction methods are central to sustainable development, the term more broadly includes consideration of surrounding land features and use of innovative design techniques to lessen the impact of development. Thus, elements of sustainable development may include providing green space; managing stormwater on site; use of construction materials that contain little to no toxins; use of energy efficiency measures; accessibility, density and transit.