Much like using a Siutability map for corridor optimization or by using a coverage object developed from an SDF file having zoning restriction data (R1, R2, Commercial, Industrial, etc.), buidling construction for height, proximity to lot lines, volume relative to lot size etc. could be selectively controlled (with an an on/off switch) by this "zoning" map. The zoning map would be editable by the end user in order to demonstrate the effects of zoning changes (say from Industrial to Residential, for example).