Contribution to the Metropolitan Study: 18 -- The project "Nested Dynamics of Metropolitan Processes and Policies" started as a collaborative study in 1983. The Series of contributions is a means of conveying information between the collaborators in the network of the project. This report gives an overview of the structure of a dynamic model built for the Amsterdam Metropolitan Region. The study concentrates on problems of analyzing and predicting the developments in the housing market to which demographic changes are explicitly related in a suggested model.