Quantifying a century of state intervention in rental housing in Germany

The paper aims at measuring the general state intervention in rental housing market in Germany from 1913 through 2015. Four policy classes are considered: Incentives for social housing, tenant protection, housing rationing, and rent controls. Based on a legislation analysis, for each class an index measuring the degree of regulation is constructed. The indices reflect dramatic increases in regulations during and after the World Wars. The 2010s are characterized by a surge in all classes of regulations related to the growing housing scarcity in large cities due to interregional migration leading to a geographical mismatch between housing supply and demand.