Mass flow, energy flow and costs of the German building stock

On behalf of a committee of the German parliament, a study of the mass, energy and monetary flows of the German building stock has been initated. The approach was macro-economic (top-down) for the calculation of the overall flows and process oriented (bottom-up)for the detailed flows created by new construction, refurbishment, demolition and utilisation of buildings. The building stock has been modelled with a stochastic replacement model for a reference population of 160 building materials. Specific data sets were used for the upstream and downstream parts. A scenario for the development of the building stock and the induced mass, energy and monetary flows was established