Old building structures don’t need to be wrecked for rehabilitation purposes. The Buc b ECDM is just a mere example of building rehabilitation while conserving the original structure. The BUC is a former fort that has been developed into an eco-hotel. In this way, no wrecking of the old structure has been made. In fact, there were wooden cabins are added on top of the old fort structure, which, obviously has added to the modern look of the building. With this project, wasting of energy, effort, and money for wrecking were eliminated, and no more old building materials and debris have been added to the mountains of our landfills.