Owners select alternatives for their own reasons, but they must be properly informed by the construction industry of impacts and full range of environmental consequences of various alternatives, with increased emphasis on sustainability of natural resources affected by the construction projects. Sustainable design is the conception and realization of environmentally sensitive and responsible expression as a part of the evolving of nature. Buildings are designed to be flexible enough to accommodate many human purposes, including living, working, thereby allowing the materials to remain in place while serving different needs. World population is now increasing at a higher rate. The population is creating the bulk of world's pollution.
Human impacts are devastating the global ecosystem.
One possible solution is sustainable development. It is an effort to use technology to help cleanup the mess. The construction industry in Japan is focusing on development of appropriate technology to solve this problem. Materials are be considered in terms of their embodied energy and characteristics of toxicity, potential off-gassing, finish and maintenance requirements. The recyclability of entire structure must be considered in the event that building fails to be adaptable to future human needs.