The Gilliam Place case study describes a mixed-used development consisting of 173 affordable rental units along with retail and civic space built on 1.23 acres of valuable urban land in Arlington County, Virginia. Like the rest of the Washington D.C. national capital region, Arlington suffers from a severe shortage of affordable housing. Over 7,500 families and individuals in Arlington do not have access to housing they can afford; and the trend is negative. Arlington County lost 13,500 affordable housing units from 2000 to 2013 through a combination of rental increases and a rapid increase in home prices. The real estate development problem Gilliam Place attacks is nothing short of a national crisis that impacts millions of individual families as well as the nation’s future economic health. Home prices nationwide are rising at twice the rate of wage growth and nearly 11 million US workers spend more than half of their paycheck on rent.