1 Strategic housing management: an asset management model for social landlords (revised manuscript November 2003) Vincent Gruis* and Nico Nieboer** * Faculty of Architecture, Delft University of Technology, PO Box 5043, NL – 2600 GA Delft, the Netherlands E-mail: v.gruis@bk.tudelft.nl ** OTB Research Institute for Housing, Urban and Mobility Studies, Delft University of Technology, PO Box 5030, NL – 2600 GA Delft, the Netherlands E-mail: nieboer@otb.tudelft.nl