Cities across the United States continue to make new commitments to global climate mitigation-240 municipalities have signed on to the “We Are Still In” campaign and more than 50 cities now have set 100 percent renewable-energy targets for the future. With buildings accounting for 75 percent of U.S. electricity consumption, achieving these commitments will require the active participation and cooperation of the real estate sector. Many cities are still in the very early stages of developing new policies and incentive programs to support the real estate industry in transitioning to more energy- and carbon-efficient building development and management, and open channels of communication between the public and private sectors are key to creating smart climate mitigation policy. This panel will highlight innovations in public/private partnerships focused on sustainability and identify best practices that facilitate collaboration between the public and private sectors with the goal of achieving value-enhancing climate policy, including the highly successful Green Ribbon Commission in Boston. It will also address recent building carbon mitigation policies enacted in D.C. and New York City.