The City of Indianapolis, Department of Metropolitan Development is responsible for land use regulations within Marion County. Every year the zoning staff face the challenge of processing a large number of rezoning petitions submitted by citizens. Planners working under the supervision of the zoning administrator are responsible for the data entry of rezoning boundaries. Also, they are assigned the responsibility of conducting research on zoning history, providing information to the public, and producing detailed zoning maps to reflect zoning changes as they take place. With such a dynamic process, it is essential to integrate GIS tools in the decision making process to enable them to handle spatial data efficiently and with minimum training. As part of Convergent Group's commitment to manage and support the GIS application for the City, we developed a multifaceted zoning management system to reengineer the data flow process. The system consists of eight primary modules; the first module is a COGO-based application developed in ARC/INFO AML to support data entry for rezoning legal boundaries. Five modules were developed in ArcView GIS to provide staff with tools for data viewing, data management and update, analysis, reports, and map production. A data entry module for rezoning records was developed in Visual Basic to maintain rezoning records. Finally, a MapObjects IMS application was developed to serve live zoning data over the Internet accompanied with an online zoning ordinance system and property information.