• Excessive energy consumption has a serious impact on the low-carbon of communities. • There is marked heterogeneity between communities for carbon emission efficiency. • Different types of communities have various carbon mitigation situations. • Proposes an adaptive decision-making framework for neighborhood low-carbon renewal. • Develops multiple implementation strategies and paths of neighborhood renewal. Excessive emissions of CO 2 have become an important factor affecting sustainable urban development. In the existing renewal decision-making, few strategies have been formulated with the goal of promoting the low-carbon development. As a fundamental building block of a city, low-carbon construction in neighborhoods is already the basis for promoting sustainable cities. Therefore, this study develops a carbon accounting methodology and an efficiency assessment model that are applicable at the neighborhood level to measure the carbon emission characteristics and reduction potential. Then, a decision-making framework for sustainable neighborhood renewal is put forward from the perspective of carbon emission mitigation. Through a case study of fifteen communities in Yuzhong District, Chongqing in China, this study reveals the current situation of community CO 2 emission and carbon emission efficiency, and formulates the sustainable renewal paths according to local conditions. Results show that 83.16% (1.68E+08 kg) of the CO 2 in the study communities comes from energy consumption, and CO 2 absorption is only 1.78% (3.62E+06 kg) of the total emission. Meanwhile, the carbon emission efficiency of the fifteen study communities has a significant heterogeneity, with a mean value of 0.7402, and 80% of these communities are ineffective. These communities are ineffective mainly because the resource investment cannot be fully utilized. For example, the average utilization efficiency values for energy, purchased resources, and natural resources are 0.7427, 0.8113, and 0.4384, respectively. Thus, adopting adaptive renewal strategies to integrate the use of resources can effectively promote the construction of low-carbon neighborhoods. In addition, the research results can provide a basis for the organization and management of low-carbon renewal projects and the implementation of plans in other regions.
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