No, in fact the opposite is true.  There is no evidence that property values diminish at all as a result of supportive housing development while there is both statistical and anecdotal evidence that property values increase.  A 2008 study quantifying the impact of development on neighborhoods shows surrounding property values substantially increased in eight of nine neighborhoods surveyed.  Common sense supports this notion since sponsors either turn blighted buildings into attractive new housing or build on abandoned empty lots that are frequently magnets for illegal activity. Furthermore, historically supportive housing has served as a catalyst for economic development.  Because supportive housing either rehabilitates a decrepit building or builds on an empty lot, it improves a block’s look and feel.