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This paper presents the design and implementation of a multi-touch gesture interface framework that has been designed and implemented for collaborative urban planning. The user gestures required for supporting collaborative urban planning have been defined by analysing a well established urban planning environment, previously developed by the authors. Although, the urban planning have been considered as the application context, the overall multi-touch gesture interface framework has been designed and implemented as a layered architecture to support any high level applications. This layered gesture architecture comprises a multi-touch raw data layer, a basic gesture layer and an application specific gesture layer.