This article analyses expectations and experiences of digital public spaces that facilitate community engagement with urban planning. While viewing digital spaces as part of an expanding repertoire of public spaces and events – physical and digital – that signify the participatory turn in municipal governance, we argue that local officials and residents are overly optimistic about the democratic and administrative capacities of the digital sphere. Through a case study from Melbourne, Australia – a city with significant growth pressures – we argue that the experience of new participatory digital platforms falls short of expectations, for both residents and officials. Data show that well-documented problems with established modes of community engagement such as agenda control and ‘black boxing’ of responses, are replicated in on-line settings. The wariness residents have of administrators and elected officials are overlaid by new concerns of digital distrust and digital exclusion. For officials, using these digital spaces effectively requires time to develop and apply new skills. Our study suggests that digital spaces are not homogenous but are made up of diverse and complex practices and interrelationships. The multiplex relationships making up these digital spaces suggest that strategic and contextual combinations of online and offline engagement may be a path towards inclusive and democratic community engagement.