The 2006 Quadrennial Defense Review (QDR) Report identified the ability to operate in urban terrain as a critical capability requirement. In addition, the Testing in a Joint Environment Roadmap Strategic Planning Guidance for Fiscal Years (FY) 2006-2011 identifies the need to develop representative, operationally relevant joint mission environments. Joint doctrine describes urban areas as complex, dynamic environments consisting of three distinguishing characteristics. The urban triad can be identified by the physical terrain, the non-combatant population and the physical and service infrastructure. Although the concept of what constitutes an urban area is widely understood, the design of an area sufficient for military testing/training is complex when considering the range of systems utilized by the military, the regional variability of urban areas, and cost constraints. Given financial, time, technical, and resource restraints it is unrealistic for the DOD to build cities to meet the training/testing need. Future urban testing/training areas should be of sufficient size, diversity, density, height, and depth to present realistic urban effects to sensors, communications systems, targeting systems, and personnel utilized on the urban battlefield. This paper will describe an analysis performed to determine the minimum size of the area, the minimum size of buildings and the minimum number of buildings required to generate the required effects without building an unnecessary, more expensive, number of buildings. To determine these minimums the following analyses were performed and will be described: 1). Physics analysis with respect to electromagnetic propagation in and around buildings 2). System analysis with respect to the mission and capabilities of military systems 3). Tactics, Techniques, and Procedures (TTP) employed when using the system. Additionally, the functional types of buildings that make up an urban area are described, and a notional design configuration to meet these requirements is presented.