Additionally, the inadequate government policy concerning economic assistance and supply of decent and safe housing, has encouraged non-authorized urbanizations in high risk locations, which are built without complying any of the technical requirements, with materials such as non-confined masonry, prefabricated systems that are not endorsed by the Earthquake-Resistant Standard, wood and even corrugated metal roofing.
Adicionalmente, la insuficiente política estatal en cuanto a ayudas económicas y suministro de viviendas dignas y seguras, ha fomentado urbanizaciones no autorizadas en lugares de alto riesgo y construidas sin cumplir ningún requisito técnico, con materiales como mampostería no confinada, sistemas prefabricados no avalados por la Normativa Sismo Resistente, madera e incluso latones.