Callahan is a Lecturer in the Weitzman School of Design. As an urban planning and finance professional, she has over 18 years of experience spanning nonprofit, public, and private sectors. Callahan has focused her career on redressing and redesigning systems in the built environment that produce harm for people and the planet. Currently, she works in public service as the Division Director for Real Estate and Community Development Finance in Fairfax County, Virginia, serving in a leadership role responsible for growing the County’s portfolio of affordable housing and community development investments. As a Principal at HR&A Advisors, she led work focused on the production and preservation of housing affordability across the country, including program and policy design and energy efficiency and climate strategies. Prior to HR&A, Callie was National Director of Housing for Local Initiatives Support Corporation (LISC), a national Community Development Financial Institution (CDFI), where she was responsible for housing strategies and investments across 37 cities and rural areas. She has structured over 1 BB in affordable housing transactions during her career, has advised the Federal Reserve, banks, tech companies, foundations, the White House, and the Australian Parliament on how to advance housing affordability and economic mobility.
