Nanotechnology is one of the most important key technologies of the twenty-first century. New materials are being discovered and developed everyday as a result of investigating ways to achieve molecular and atomic precision in engineering of materials. These new materials present new opportunities to solve problems like heat absorbing windows, energy coatings etc... Nanotechnology is an enabling technology that opens new possibilities in construction sustainability. On one hand, it could lead to a better use of natural resources, obtaining a specific characteristic or property with minor material use. It can (also) help to solve some problems related to energy in building (consumption and generation), or water treatment and air Purification?.. As a result, NanoArchitecture has the ability to meet accepted environmental performance criteria like LEED (Leadership in Energy and Environmental Design) which offers a definable measure of sustainability and effects of global climate change.