Mortgage interest rates didn't begin their recent surge until the start of September, but home prices were already feeling pressure, as fewer people could afford what was for sale.
Nationally, prices rose 5.8 percent in August compared with August 2017, according to the S&P CoreLogic Case-Shiller home prices index. That is less than the 6 percent annual gain in July.
The index's 10-City Composite rose 5.1 percent annually, down from 5.5 percent in the previous month. The 20-City Composite posted a 5.5 percent year-over-year gain, down from 5.9 percent in the previous month.
"Following reports that home sales are flat to down, price gains are beginning to moderate," David M. Blitzer, managing director and chairman of the index committee at S&P Dow Jones Indices, said in a release. "Rising prices may be pricing some potential home buyers out of the market, especially when combined with mortgage rates approaching 5 percent for 30-year fixed rate loans."