Top Bay Agents is a company of The Gregori Group, helping clients buy and sell Castro Valley Real Estate in alameda county- CA BRE 00973793 Agent's affiliated with TopBayAgents.com are among the East Bay's top East Bay real estate professionals. They are members of the California and National Associations of Realtors. As California Licensed Real Estate Agents practicing in Castro Valley, they will provide you with responsive, enthusiastic service whether you are interested in buying or selling your home (house) in Castro Valley or other San Francisco Bay Area Cities. A Gregori Group Company