In this paper the production and recycling process of the four most important cardboards are shown and explained. These are corrugated-, honeycomb-, tubes and solid- cardboard. For all these types the properties waterproof, fireproof, insulation, strength, weight, price and architectural freedom is compared. With this data the use of cardboard in a coastal area is discussed. For the coastal area the assignment is elaborated and a few possibilities for the use of cardboard such as foundation, one-season and element construction is shown. Concluded is that the properties of cardboard can definitely be benefited for the construction of a beach house.