Londoño García, Julio César2012-07-162012-07-1620091909-0455http://hdl.handle.net/10567/542This article is a brief introduction to the LEED (Leadership in Energy and Environmental Design) certification process. This certification is granted by USGBC (United Stated Green Building Council), to acknowledge leadership in energetic and environmental design. When is the green certification –or LEED- is granted to a building, it means that it is built and operated by using sustainable methods and renewable materials. The importance of sustainable construction is then remarked, because it is basic, regarding the diverse requirements and purposes of LEED in every area intended to be certified. It can be concluded that a BAS (Building Automation System) is the best tool to obtain the LEED certification and this also means that a green building is an intelligent building. Not only is all this important for a sane environment, but also to have more economic costs for the construction and the maintenance of buildings.esEdificios verdesCorporación Universitaria LasallistaÁrea Metropolitana del Valle de AburráLeadership in energy and environmental design (LEED)Building automation system (BAS)Construcción sostenibleEdificio inteligenteArticle