This study constructs a community carbon emission assessment system based on the greenhouse gas emissions inventory of the Intergovernmental Panel on Climate Change (IPCC). The system contains three activities, namely, building service, transport, and waste treatment and disposal. A street community in Ya'an, Sichuan, China is taken as a typical case for the study, and its carbon emissions during 2015-2017 are measured to demonstrate the practical application of the proposed assessment system. The results indicate that electricity consumption, transport, and natural gas consumption contribute the most carbon emissions in the community, accounting for 40.3%, 25.6%, and 25.1% of the total emissions on average over the 3 years. The study has policy implications for low carbon consumption, and thus, can promote sustainable community development. Limitations regarding the measurement are given to lay the foundations for future research.