BY JANN SWANSON Home prices grew by an estimated 0.4 percent in November according to CoreLogic’s Home Price Index (HPI) and were 5.1 percent higher than at the end of November 2017. These figures indicate a significant slowdown in the rate of appreciation nationally over the past year. The company reported a 1.0 percent gain for the month of November 2017 and, at that point, prices were up 7.0 percent year-over-year.