The City of Boston has pledged to be carbon neutral by 2050.  Buildings have a key role to play as they currently account for 75% of the City’s greenhouse gas emissions. Researchers in the Institute for Sustainable Energy and the Department of Earth and Environment at Boston University assessed potential technologies and policies that reduce greenhouse gas emissions across the City’s energy, buildings, transportation and waste sectors. Social equity is a key cross-cutting theme. This work is a collaborative effort with the City of Boston and the Boston Green Ribbon Commission, and will inform the City’s upcoming Climate Action Plan update. This presentation will summarize key results of the Carbon Free Boston study and discuss implications for decision making and action by all those involved in the building sector.