The National Association of Realtors says its seasonally adjusted index for pending home sales declined 1.3 percent to 109.5. That's close to May's reading of 111.3, the highest since December 2006.
The small decline suggests sales of previously owned homes should remain healthy in the coming months. There is generally a one- to two-month lag between a signed contract and a completed sale.
Sales jumped to an annual pace of 5.4 million in July, the highest in 3½ years. That's consistent with a healthy housing market.
Higher mortgage rates appeared to have had a bigger impact on new-home sales, which plummeted last month. That raised fears that rate increases were restraining the housing recovery.
But many economists note that home prices and mortgage rates remain low by historical standards.
The average rate on a 30-year mortgage reached 4.58 percent last week, the highest level in two years and up from 3.35 percent in early May. Still, that's below the average since 1985 of about 7 percent, according to Bankrate.com.
Mortgage rates began to rise after Federal Reserve Chairman Ben Bernanke first signaled that the Fed might reduce its bond purchases later this year. The purchases have helped keep borrowing costs low.
Rising home prices and more construction have boosted economic growth and created more jobs. The housing recovery has provided crucial support to the economy when other drivers, such as manufacturing, have struggled.
However, gains in home prices may be starting to level off. Prices jumped 12.1 percent in June from a year earlier, according to the Standard & Poor's/Case-Shiller home price index released Tuesday. That's slightly slower than May's 12.2 percent year-over-year gain. But price increases slowed in June from May in 14 of the 20 cities tracked by the index.
The stabilization in prices isn't necessarily a bad thing, economists said, because it could keep homes affordable and help prevent a bubble from developing in the housing market.