Brett Theodos, PhD, directs the Community Economic Development Hub at the Urban Institute, where he is a senior fellow in the Metropolitan Housing and Communities Policy Center. His work focuses on economic and community development, neighborhood change, affordable homeownership, consumer finance, and program evaluation and learning. He has led several studies of affordable homeownership supports, including shared equity models like community land trusts, along with research on down payment assistance and alternative financing structures. Theodos is also working to grow nonprofit capacity in evaluation and performance measurement. He codirects Measure4Change, which provides technical assistance and facilitates a community of practice for nonprofits.