This course will discuss methods for decarbonizing the built environment through regenerative design and high-performance buildings. Buildings account for approximately 40% of total energy consumption in the United States and are significant contributors to carbon emissions. Existing buildings pose even more challenges than new construction, since the vast majority were built before stringent energy codes were extensively enforced. For example, 82% of commercial buildings in the United States were built before 1999, and 60% were built before 1979. Employing regenerative design strategies and achieving net-zero energy goals in existing buildings are viable solutions for decarbonizing the built environment. Besides improvements in operational energy, energy-efficient retrofits of existing buildings allow the embodied energy and carbon in the original structures to be saved. The course will introduce participants to the latest research, and use specific case studies to illustrate design techniques, building performance analysis procedures, and methods for achieving net-zero energy design in existing buildings. Case studies will include several different building types as well as climates. The last part of the course will discuss decarbonization strategies for urban resiliency, including planning, design, and policy considerations. Hosted by the Building Performance Knowledge Community (BPKC).