BuildingSearch
Search commercial real estate listings for free. Provides free office, industrial, investment, land, retail, warehouse, for sale, for lease, and for sublease commercial property listings.
http://www.buildingsearch.com/

LoopNet
The largest commercial real estate listing service online. Search commercial properties for sale or lease, obtain commercial loans from the industry’s top lenders, view commercial real estate comparables, market your commercial listings for sale and more.
http://www.loopnet.com/

VA Waterfront Properties
Blue Heron Realty Co. is a local, family-owned real estate firm specializing in beautiful Eastern Shore real estate.
http://www.blueheronva.com/