A normal market typically has a five- to six-month supply of homes for sale. That means it would take five to six months to exhaust the supply if sales continued at their current pace and no more homes were added to the market. In the Washington region, several counties were within the normal range as of April 2010.
The Washington Post - May 17, 2010
Healthy signs in area's housing market Article | The glut of homes for sale in the Washington area has shrunk dramatically since the housing market's darkest days in 2008, and supply is now close to healthy in some spots.