WASHINGTON, D.C. (NAHB) – December marked the fourth month in a row that the National Association of Home Builders/First American’s list of improving housing markets expanded.

The improving markets index (IMI) rose from 30 to 41 markets. Eight of those are in Texas: Amarillo, Corpus Christi, Laredo, McAllen, Midland, Odessa, Sherman and Tyler.

While 20 markets (including Laredo) were added to the IMI this month, nine were dropped. Among them was Waco.

The index identifies metropolitan areas that have shown improvement in housing permits, employment and house prices for at least six consecutive months.