This research project will address the challenges in developing, implementing, and using digital twins for regulatory agencies. The work is divided into two streams. The first investigates the technical challenges that regulatory agencies face in creating of digital twins, including reviewing the development approval processes, encoding codes, bylaws, and other regulations, developing a BIM standard for regulatory compliance; and integrating BIM and GIS. The second stream identifies the economic, environmental, and social challenges that can be addressed by using digital twins.