GWCAR
The Greater Washington Commercial Association of Realtors (GWCAR) is a regional trade association dedicated to serving commercial real estate interests throughout the District of Columbia, Suburban Maryland and Northern Virginia. GWCAR strives to make the Greater Washington area more conducive to business. Visit the GWCAR website for information on properties, GWCAR publications, and upcoming events & courses. www.gwcar.org

CoStar Group
CoStar multimedia database to track more than 290,000 buildings and 330,000 tenants. www.costargroup.com

LoopNet
With over two million square feet of new properties for lease every day, LoopNet allows interested parties to list and search, at no cost, its database of commercial real estate listings via its website. User-friendly search screens allow for searches based on many parameters, such as location, property type, and square footage. www.loopnet.com