the numbers the sp corelogic caseshiller 20city price index fell 12 in september its third consecutive monthly decline the decline matches the forecast of economists were expecting a 13 decline yearonyear appreciation rose 104 but that reflects the stronger conditions in late 2021 the figure is down from 131 in august a broader measure of home prices the national index fell by a seasonally adjusted 08 in september key details on a month over month basis all 20 cities posted declines led by the western region sales were strongest in miami tampa and charlotte yearoveryear gains in home prices peaked roughly six months ago and have decelerated since then big picture mortgage rates have shot up making homes less affordable and putting many buyers on the sidelines economists think that home prices have further to fall federal reserve officials don’t seem too concerned this process will turn into a deep downturn looking ahead “prices have much further to fall before they adjust fully to the ongoing collapse in demand” said ian shepherdson chief economist at pantheon macroeconomics market reaction stocks djia spx were set to open slightly higher on tuesday the yield on the 10year treasury note tmubmusd10y rose to 373