Building social mix by building social housing? An evaluation in the Paris, Lyon and Marseille Metropolitan Areas

In France, social housing is perceived as an instrument for promoting social mix. In particular, there is an expectation that introducing social housing into wealthy areas will bring in low-income households and lead to greater coexistence between lower and higher socio-economic groups. However, several factors tend to hinder the pro-mix effects of social housing: financial constraints that reduce the number of new buildings, especially in high-income neighbourhoods; Not in my backyard attitudes in wealthy areas; allocation practices by social landlords who seldom rent dwellings in expensive neighbourhoods to poor households. Previous experiments with social housing have often proved disappointing in their impact on social mix. What about today’s experiments? Has the social housing built in recent times increased social mix? The empirical evaluation we carried out in Paris, Lyon and Marseille shows that recent social housing developments have stimulated social mix but the impact measured is very small.