With today’s release of the June S&P/Case-Shiller Home Price Index, we learned that seasonally adjusted home prices for the benchmark 20-city index were up 0.1% month over month. The seasonally adjusted national index year-over-year change has hovered between 4.2% and 5.8% for the last twenty-eight months. Today’s S&P/Case-Shiller National Home Price Index (nominal) reached another new high.

The adjacent column chart illustrates the month-over-month change in the seasonally adjusted 20-city index, which tends to be the most closely watched of the Case-Shiller series. It was up 0.1% from the previous month. The nonseasonally adjusted index was up 5.7% year-over-year.

Investing.com had forecast a 0.2% MoM seasonally adjusted increase and 5.7% YoY nonseasonally adjusted for the 20-city series.

Here is an excerpt of the analysis from today’s Standard & Poor’s press release.

“The trend of increasing home prices is continuing,” says David M. Blitzer, Managing Director and Chairman of the Index Committee at S&P Dow Jones Indices. “Price increases are supported by a tight housing market. Both the number of homes for sale and the number of days a house is on the market have declined for four to five years. Currently the months-supply of existing homes for sale is low, at 4.2 months. In addition, housing starts remain below their pre-financial crisis peak as new home sales have not recovered as fast as existing home sales.” [Link to source]

The chart below is an overlay of the Case-Shiller 10- and 20-City Composite Indexes along with the national index since 1987, the first year that the 10-City Composite was tracked. Note that the 20-City, which is probably the most closely watched of the three, dates from 2000. We’ve used the seasonally adjusted data for this illustration.

For an understanding of the home price data over longer time frames, we think a real, inflation-adjusted visualization of the data is an absolute necessity. Here is the same chart as the one above adjusted for inflation using a subcomponent of Bureau of Labor Statistics’ Consumer Price Index, the owners’ equivalent rent of residences, as the deflator. Among other things, the real version gives a better sense of the dynamics of the real estate bubble that preceded the last recession.