Innovation districts, as a particular place for knowledge-based urban development strategies, have been praised for promoting sustainable economic developments. They have, however, been criticized for contributing to gentrification, urban inequality, and other problems that hinder sustainability. There has been little research addressing how planners maintain economic sustainability and promote the social and environmental sustainability of innovation districts. This paper takes Hangzhou as a case study, using the policy zoning—a new zoning method based on suitability evaluation—to formulate the applicable place plan for building innovation districts. The results show that the policy zoning can help planners arrange the construction of innovation districts in certain urban areas and take the most targeted measures to improve the sustainability of possible innovation districts. These measures include either enhancing the foundations of the metropolitan area or promoting innovation development by referring to suitability evaluation results. Planning based on policy zoning is of benefit to the sustainability of innovation districts through avoiding the impulsive behavior of policymakers, as well as promoting the better distribution of development achievements among the people, rather than concentrating on land developers and stakeholders who pursue maximum profits.

A community is the basic organization and living unit of a city. During COVID-19, China’s epidemic prevention and isolation measures against COVID-19 based on the community as the basic unit achieved excellent results and strengthened the impact of non-contact interaction activities on the lifestyles of resident communities. We surveyed and interviewed 1610 respondents on how the epidemic changed residents’ lifestyle habits “before, during, and after COVID-19” in 12 communities in Hangzhou, China. Then, we undertook a comparative analysis and found that, under the stimulus of COVID-19, the frequency of residents using non-contact interaction had increased to varying degrees, community lifestyles had undergone significant changes, and the impact of non-contact interaction on community service facilities was complicated. Our conclusions are as following: (1) under COVID-19, the community space had become a composite space—that is, a new type of community space formed by the fusion of community physical space and community virtual space; (2) non-contact interactive activities were the main content in the community composite space, which differently influenced people’s habits of using existing community service facilities; (3) the influence mechanism was manifested in significant differences and spatial scale effects. Therefore, based on the research results, we propose a model for the configuration of service facilities in community composite spaces. It is necessary to build communities into a healthy, safe, and convenient urban space governance unit to ensure the sustainable development of cities.