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
