Abstract
We investigate smart-phone based augmented reality architecture as a tool for aiding public participation in urban planning. A smart-phone prototype system was developed which showed 3D virtual representations of proposed architectural designs visualised on top of existing real-world architecture, with an appropriate interface to accommodate user actions and basic feedback. Members of the public participated in a user study where they used the prototype system as part of a simulated urban planning event. The prototype system demonstrated a new application of augmented reality architecture and an accessible way for members of the public to participate in urban planning projects.