One of the key limits to affordable housing development is zoning and other land use restrictions that discourage the development of smaller or moderately sized market rate housing, thereby limiting overall affordability for lower income households. Often called “exclusionary zoning,” these practices greatly reduce the likelihood that households with a wide range of incomes will be able to live in certain locales, thereby contributing to social and racial segregation. The result is that non-white and lower income households are often disadvantaged in seeking desirable employment and educational opportunities. Concerns about restrictive land use patterns have been articulated for at least four decades by government, academics, and professionals. This study is aimed at better understanding the experiences in Massachusetts and other states that have programs targeted at overcoming the negative impacts associated with exclusionary zoning. A number of states have attempted to deal with the reality that many cities and towns across the country do not have any areas zoned for multifamily housing, or for homes that can be built on small lots. Many cities and towns in Massachusetts have zoning ordinances that restrict the construction of multifamily housing and single family homes on small lots