Coldwell Banker Segerstrom is a real estate firm with a presence in Sonora, Calif. The company deals in the sale and purchase of residential and commercial properties. It is a part of Coldwell Banker, which is one of the leading real estate organizations. Founded in 1906, the parent company has more than 3,500 offices and employs over 100,000 professional sales associates. It provides a variety of relocation, settlement, and home warranty and inspection services. Coldwell Banker offers a range of properties for buying and selling in several areas, including Northern Virginia, the District of Columbia, Maryland and Delaware.