After two consecutive months of increases, existing-home sales declined in the month of December, according to the National Association of Realtors®. None of the four major U.S. regions saw a gain in sales activity last month. Total existing-home sales1, completed transactions that include single-family homes, townhomes, condominiums and co-ops, decreased 6.4 percent from November to a seasonally adjusted rate of 4.99 million in December.