The project involves the rehabilitation of 3 buildings located 143 to 157 road from Ingersheim to Colmar comprising 100 social housing units built in the early 1960s. This project is part of the policy of Pôle Habitat Centre Alsace which consists of reducing the energy consumption of its buildings in order to optimise the level of energy charges of its tenants. The dwellings are classified as energy label E and will reach BBC level after renovation. The contractor of the design contract has committed to a 40 % reduction in energy consumption after work compared to pre-works consumption.