This paper examines: (1) The automated mapping/facilities management a
nd geographic information system (AM/FM/GIS), which are called compute
r-assisted spatial information systems (CASIS) in this paper, software
selection process; (2) develops a knowledge-based, multiattribute, mu
ltiobjective, consensus building model (CBM); and (3) establishes the
validity for using the exogenously developed CBM for the selection of
CASIS software. Model formulation is based on analyzing how well the a
ttributes of the software meet user requirements in four areas: functi
onality, technical capability, vendor characteristics, and costs. Expe
rt knowledge was gathered from several domain practitioners regarding
the ability of GIS software functions to fulfill a user's needs. Respo
nses from those experts proved to have a high degree of consistency. A
sensitivity analysis was conducted on the CBM, showing the model to b
e stable in its predictions. The validity of the model's predictions w
ere shown to be realistic in comparison to domain experts.