The development and use of simulation models to provide administratively oriented planning tools for campuses is discussed based on work previously done at the University of Washington on student/space/density relationships. These relationships are extended toward development of simulation models of relationships between student academic programs and resulting space needs. It is intended that the models be adaptable to computer programs capable of using projections of variables which affect staff and facilities requirements to produce estimates of those requirements at any future time. Existing data weaknesses, the application of the models to other colleges and universities, and the models' interrelated computer programs are discussed. (HW)