Heritage value combined with energy and sustainable retrofit: representative types of old Walloon dwellings built before 1914

Energy and sustainable retrofit of old buildings with heritage value is a challenging issue for Europe. The research project "P-RENEWAL" aims to develop a methodological tool for energy and sustainable retrofit of Walloon dwellings built before 1914, with heritage value. The present contribution will mainly discuss the methodology used to identify building typology and will also submit a detailed description of several building types. This methodology can be applied in other contexts to provide any user with data on different scales, from the building to the entire city, helping to make sustainable decisions. (C) 2017 The Authors. Published by Elsevier Ltd.