Drs. Jip Claassens, is junior researcher at the Department of Spatial Economics of VU University Amsterdam in the Netherlands. He studies the growth of the Dutch housing stock, and assesses which underlying processes contribute to these changes in the housing stock. Using this knowledge he builds spatial models that simulate future urban development. In addition to working at Vrije Universiteit Amsterdam, he works part time at the Object Vision company where he helps bringing these model to planning practice.