However, in all study cases, they state that one of the major problems they have faced is related to obtain the client approval to implement measures to reduce environmental aspects. Clients assume that such measures would increase costs, so they usually reject them; even though in many cases they represent a cost reduction, mainly during the operation stage.
Sin embargo, en todos los casos señalan que uno de los principales problemas que han tenido está relacionado con la aprobación por parte del cliente de las medidas para reducir el impacto ambiental, ya que suponen un aumento de costes, y normalmente suelen ser rechazadas aunque en muchos casos supongan una reducción de costes, principalmente en la fase de uso.