The challenges facing the development of affordable housing across the United States are growing as rent burdens increase, as existing affordable housing ages and is in need of repair, and as neighborhoods, gentrify and citizens compete for prime real estate. The five case studies that follow examine a particular aspect of the development process and showcase the different ways affordable housing eventually gets built. In particular, we will take a look at the financial incentives used and how different players are positioned to take advantage of the tools that are available.