The urban commons : how data and technology can rebuild our communities Part I. The field of urban informatics: Data driven approach to urban science and policy Seeing the city through big data Part II. Maintenance of the urban commons: Caring for ones territory Division of labor in the commons Part III. Government in the age of civic tech: Partnering with the public Experiments in coproduction Part IV. Digital divides in urban informatics: Extending 311 across Massachusetts Whither the community Conclusion: The future of the urban commons The future of smart cities has arrived courtesy of citizens and their phones. To prove it Dan OBrien explains the transformative insights gleaned from years researching Bostons 311 reporting system a sophisticated city management tool that has revolutionized how ordinary Bostonians use and maintain public spaces. Through its phone service mobile app website and Twitter account 311 catalogues complaints about potholes broken street lights graffiti litter vandalism and other issues that are no one citizens responsibility but affect everyones quality of life. The Urban Commons offers a pioneering model of what modern digital data and technology can do for cities like Boston that seek both prosperous growth and sustainability. Analyzing a rich trove of data OBrien discovers why certain neighborhoods embrace the idea of custodianship and willingly invest their time to monitor the citys common environments and infrastructure. On the governments side of the equation he identifies best practices for implementing civic technologies that engage citizens for deploying public services in collaborative ways and for utilizing the data generated by these efforts. Bostons 311 system has narrowed the gap between residents and their communities and between constituents and local leaders. The result OBrien shows has been the creation of more effective policy and practices that reinvigorate the way citizens and city governments approach their mutual interests. By unpacking when why and how the 311 system has worked for Boston The Urban Commons reveals the power and potential of this innovative system and the lessons learned that other cities can adapt.