The housing inventory is at its lowest level since 2006, according to Pro Teck Valuation Services. The number of homes listed for sale in May was down 21 percent nationally, with the remaining housing inventory averaging 6.3 months. Accord to the CEO of Pro Teck, this indicates that the housing market as a whole is stabilizing. CEO Tom O’Grady noted that the inventory of housing was at or below a five-month supply throughout the 2002 to 2005 period, a time when house prices were recording their biggest gains. The firm reported positive trends in states like Michigan, Illinois and parts of California...