The BHA decarbonization plan takes an equitable and resilient approach to large-scale decarbonization with an aggressive, 7-year plan. Electrification of these units provides a lower environmental footprint to thousands of residential spaces within Boston. Upgrading the systems within the building increases resilience, as well as human health with the implementation of elements such as electric stoves that provide improved air quality, and centralized HVAC systems that are more resilient in the event of a heat wave. Furthermore, with thousands of units in various physical conditions, each unit requires different solutions that work best for the residents, the project target, and the city. A holistic view of this project will be given through a joint presentation providing the perspective of both the client and the consultant. This session will analyze the complementary large- and small-scale measures that are necessary to complete this task, as well as the sequencing of actions needed to complete the project on time. Furthermore, the methodology of grouping and prioritizing buildings will be discussed as well as the three main challenges of this project including technology, human, and money-based factors. Overall, the BHA decarbonization project will set a precedent for developing affordable, resilient, and climate friendly housing within large cities.