The Neighbor is King: Customer Discrimination in the Housing Market

This paper provides a method to single out customer-based discrimination in the housing market. We build a matching model with ethnic externalities where landlords differ in the number of housing units they own within the same building. Multiple-dwelling landlords discriminate more often than single-dwelling landlords only if some tenants are prejudiced against the minority group. By testing the null hypothesis whereby minority tenants are equally likely to have a multiple-dwelling landlord, we can test whether there is customer discrimination or not. We run the test on French data and show evidence of customer discrimination in the rental market.