The Washington, DC metropolitan area covers not only the District of Columbia, but large areas of Maryland and Virginia as well.  While these jurisdictional borders are invisible, residents move easily and often between them.  There are substantive differences in laws, taxes, forms and procedures which is why many Hagner agents maintain licenses in all 3 areas.  The region's MRIS listing information database covers all of these areas and contains the great majority of active property listings available.