The NAR's Pending Home Sales Report suggests the Spring buying season was a big flop.

Pending home sales decreased modestly in May and have now fallen on an annualized basis for the fifth straight month, according to the National Association of Realtors®. A larger decline in contract activity in the South offset gains in the Northeast, Midwest and West.

The Pending Home Sales Index, a forward-looking indicator based on contract signings, decreased 0.5 percent to 105.9 in May from 106.4 in April.

Lawrence Yun, NAR chief economist, says this year's spring buying season will go down as one of unmet expectations.