Existing-home prices continued to show gains but sales fell in June with tight supplies of affordable homes limiting first-time buyers, according to the NATIONAL ASSOCIATION OF REALTORS® (NAR).

Total existing-home sales, which are completed transactions that include single-family homes, townhomes, condominiums and co-ops, declined 5.4 percent from an upwardly revised May, but are 4.5 percent higher than June 2011.

Regionally, existing-home sales in the Northeast dropped 11.5 percent in June but are 1.9 percent above June 2011. The median price in the Northeast was $253,700, down 1.8 percent from a year ago.

For more information, view the NAR press release.