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Sales of and condominiums beat expectations for August, rising to the highest level since May of 2010, when the government’s home buyer tax credit juiced sales temporarily. This time it could be argued that the government stimulus behind sales is record low mortgage rates, but that may not be all of it.

Close to one third of the homes that sold in August went to buyers using all cash, despite average rates on the 30-year fixed sitting around 3.6 percent. Rates appear to have less of an impact than hoped. Witness mortgage applications to purchase a home fell 4 percent last week, even as rates fell to record lows on the Mortgage Bankers Association’s weekly survey.