U.S. home prices jumped 12.2 percent in May from a year ago, the most in seven years.
The increase suggests the housing recovery is strengthening.
Real estate data provider CoreLogic says prices rose from a year ago in 48 states and fell in only Delaware and Alabama. And all but three of the 100 largest cities reported price gains.
Prices rose 26 percent in Nevada to lead all states. It was followed by California (20.2 percent), Arizona (16.9 percent), Hawaii (16.1 percent) and Oregon (15.5 percent).
CoreLogic also says prices rose 2.6 percent in May from April, the fifteenth straight month-over-month increase.
Steady hiring and low mortgage rates have encouraged more Americans to buy homes.
Greater demand and a limited number of homes for sale have pushed prices higher.