This document analyzes the housing market inventory and sales in the Philadelphia area over a two year period from May 2008 to May 2010. It shows that the months supply of inventory under the usual calculation decreased by 3 months and the percentage decreased by 22.1% over this period. The number of homes listed for sale fluctuated between around 8,500 to 10,500 over the months while the number of homes sold ranged from around 600 to 1,400 per month.