We have developed a hedonic modeling approach within the GRASS GIS to identify the attractiveness of areas
around cities to new residential development. The process considers the effect of driving time to attractors
such as existing urban areas, roads, highways, intersections and access ramps along with slope and proximity
to water and forest. The current urban pattern is used to automatically calibrate the relative effect of the
different attractors. Once calibrated, proposed regional planning options can be tested to identify anticipated
changes in attractiveness to new development. This model has been applied to many locations across the
United States and is available for application to any other locations.