The document analyzes housing inventory trends over three to four years in several municipalities in the Princeton, New Jersey area, including Princeton Borough, Princeton Township, Lawrence, Hopewell, Ewing, West Windsor, and Plainsboro. It provides data on the number of homes listed and sold each year and compares year-to-date figures for 2007, 2008, and 2009 to examine whether housing supply is increasing or decreasing in the region.