Real US home prices have increased by about 90 percent since 1997.

Judge as of Sep 2006, comparing inflation-adjusted US home prices in 1997 with the 2006 peak or the latest level (Case-Shiller real index as in Shiller's data, or OFHEO deflated by CPI). True: the real increase is about 80–100%. Mostly true: about 70–80% or 100–110%. Mixed: about 55–70% or 110–125%. Mostly false: about 40–55% or above 125%. False: under about 40%.

Set before the research began.

1. E1 The Housing Boom Is Already Gigantic. How Long Can It Last? Yale School of Management (Insights), republishing a New York Times piece by Robert Shiller · 10 December 2018

   “The No. 1 boom occurred from February 1997 to October 2006, when real prices of existing United States homes rose 74%.”

2. E2 Case Shiller Home Price Index by Year multpl.com (compiles Robert Shiller data)

   “| Dec 1, 1997 | 181.48 |”

3. E3 Case Shiller Home Price Index by Year multpl.com (compiles Robert Shiller data)

   “| Dec 1, 2006 | 305.95 |”

4. E4 Case Shiller Home Price Index by Month multpl.com (compiles Robert Shiller data)

   “| Sep 1, 1997 | 180.47 |”

Robert Shiller, whose real home price index the criteria name, wrote that real prices of existing US homes rose 74% from February 1997 to the October 2006 peak (E1). The multpl.com real Case-Shiller series compiled from Shiller's data points the same way: from about 180–181 in late 1997 to about 306 in December 2006, a rise of roughly 69% (E2–E4). Shiller puts the real rise from February 1997 to the October 2006 peak at 74% [E1], which falls in the criteria's "mostly true" band (70–80%). The year-end 1997 and 2006 index values [E2, E3] imply about 69%, at the edge of the "mixed" band (55–70%). It is below the claimed 90%, which would have needed about 80–100% to count as true.