As an increasing variety of cities surpassed records establish before the Great Recession, based on a closely followed index house prices increased in April.
The S&P/Case-Shiller 20-City Composite Index climbed 5.4 percent year over year in April.
Blitzer noted that seven cities are currently establishing new highs for house costs.
Portland, Oregon, led the increases in April with a 12.3-percent increase.
The S&P/Case-Shiller U.S. National House Price Index, which measures all nine U.S. census sections, was up 5 percent in April from the preceding year.