WASHINGTON — U.S. home prices jumped in October by the most in more than six years as a pandemic-fueled buying rush drives the number of available properties for sale to record lows.

That combination of strong demand and limited supply pushed home prices up 7.9% in October compared with 12 months ago, according to Tuesday’s S&P CoreLogic Case- Shiller 20-city home price index. That’s the largest annual increase since June 2014.

The biggest price gain was in Phoenix for the 17th straight month, where home prices rose 12.7% from a year ago.

It was followed by Seattle with 11.7% and San Diego at 11.6%.