Transfer of Development Rights (TDR)

The Transfer of Development Rights (TDR) Program helps preserve farmland and farming in the Agricultural Reserve. Farming cannot continue without a substantial contiguous area available for agricultural use. The zoning to implement the TDR program is the Rural Density Transfer Zone (RDT). TDR is similar to the cluster concept in that development is shifted from the Agricultural Reserve to another location to achieve a public purpose – in this case the preservation of farmland. The basic difference from other ‘clustering’ developments is that TDR sending and receiving areas are not contiguous, and they are not necessarily under the same ownership. By moving residential uses away from farmland, TDR preserves a critical and irreplaceable natural resource while still allowing for a limited amount of housing in the Agricultural Reserve. The TDR process moves the dwelling units that would have been built under the Rural Zone designation to other, more appropriate, areas. There are two basic steps to use TDR: Establishment of a density transfer ‘sending areas’ in which development rights are created and from which they can be sold; and Designation of density transfers ‘receiving areas’ where the land and public services are capable of absorbing additional density. For more information, contact: GIS Manager Information Technology & Innovation (ITI) Montgomery County Planning Department, MNCPPC T: 301-650-5620发展权转移（Transfer of Development Rights，TDR）项目旨在保护农业保护区内的农田与农业生产活动。农业生产的持续开展离不开连片且规模充足的农业用地作为支撑。为推行TDR项目所设置的土地分区为农村密度转移区（Rural Density Transfer Zone，RDT）。TDR与集群开发理念相仿，二者均将开发活动从农业保护区转移至其他区域，以实现公共目标——在本项目中即为农田保护。TDR与其他“集群式”开发项目的核心差异在于：其开发权出让区与受让区并不连片，且未必归属同一所有权主体。通过将住宅开发活动从农田区域迁出，TDR项目既能保护这一至关重要且不可替代的自然资源，同时也允许在农业保护区内建设有限数量的住宅。TDR流程将原本需按照农村分区规划建设的住宅单元，转移至其他更适宜的区域。使用TDR项目包含两个基本步骤：其一为设立密度转移“出让区”，在此区域内创设开发权并可对外转让；其二为划定密度转移“受让区”，该区域的土地与公共服务设施具备承载额外开发密度的能力。如需了解更多信息，请联系：蒙哥马利县规划部（MNCPPC）信息技术与创新部（Information Technology & Innovation，ITI）地理信息系统管理员；电话：301-650-5620。