Home prices nationwide, including distressed sales, increased 12.4 percent in July 2013 compared with July 2012, according to a new report from real estate analytics firm CoreLogic. That is the 17th consecutive monthly year-over-year increase in U.S. home prices.

Home prices, including distressed sales, were up 1.8 percent in July 2013 compared with June 2013.

Excluding distressed sales, U.S. home prices increased on a year-over-year basis by 11.4 percent in July 2013 compared with July 2012. On a month-over-month basis, excluding distressed sales, home prices increased 1.7 percent in July 2013 compared with June 2013. Distressed sales include short sales and real estate owned (REO) transactions.

CoreLogic predicts that August 2013 home prices, including distressed sales, will be up 12.3 percent compared with last year.

"Home prices continued to surge in July," Mark Fleming, chief economist for CoreLogic, said in a statement. "Looking ahead to the second half of the year, price growth is expected to slow as seasonal demand wanes and higher mortgage rates have a marginal impact on home purchase demand."

The five states with the highest home price appreciation, including distressed sales, were Nevada (+27 percent), California (+23.2 percent), Arizona (+17 percent), Wyoming (+16.4 percent) and Oregon (+15 percent). Only one state saw home prices decline, Delaware (-1.3 percent).

Of the top 100 most populous metropolitan areas as designated by the census, 99 showed year-over-year home price increases in July, equaling the measure in June 2013.