sustainability Article Environmental Overcost of Single Family Houses in Insular Context: A Comparative LCA Study of Reunion Island and France Leslie Ayagapin *,† and Jean Philippe Praene † PIMENT Laboratory, University of la Réunion, 97430 Le Tampon, La Réunion, France;
[email protected] * Correspondence:
[email protected]; Tel.:+262-693-937-706 † These authors contributed equally to this work. Received: 30 September 2020; Accepted: 21 October 2020; Published: 27 October 2020 Abstract: The building and public works sector is, in France as in Europe, a major consumer of raw materials for both the manufacture of products and the construction of buildings and structures. This sector has a direct impact on the natural and built environment. This effect is even more pronounced in the case of isolated territories, such as islands. The latter have their own constraints (geographical location, production of the local grid mix) and particularities: very small territory, massive importation of goods in all fields, such as food, automobile, building, and others). In this study, we focus on the building branch of the construction industry, which covers housing (single-family houses and apartment blocks). The study is based on the analysis of about twenty single-family houses built in metropolitan France and Reunion Island. The construction standards for these two regions comply with European standards (CE) and French regulations. However, in the case of Reunion Island, a tropical island, it applies in particular to the Thermal, Acoustic, and Ventilation Regulations for New Buildings in Overseas Departments and Regions (RTAA DROM). The approach that is used for the environmental assessment of single-family homes is the Life Cycle Assessment (LCA), from cradle to grave.