Washington Real Estate Investment Trust is a leading real estate investment firm within the Greater Washington, DC. Area. The group was created in 1960, and is the oldest publicly traded Real Estate Investment Trust that currently operates within the country. The firm works to invest in a variety of properties to reinforce and improve their properties. The group also provides financial backing to clients, and helps to improve and build new properties. They not only invest in building but also work to obtain land within their company to sell and rent to clients. The company currently owns over 56 different diversified companies within the Great Washington, DC, Area. The company aims to thrive in the metropolitan area in which they can work with various types of organizations and add some diversity to their portfolio. The city also has a sound market and the location within allows them to respond quickly to shifts in the market, which has proven to be successful for the Washington Real Estate Investment Trust. However, while most business is done within the city, the main office is actually located in Rockville, Maryland, just outside of the capital. The Washington Real Estate Investment Trust, also known as Washington REIT, is a self-owned and self-administered company, which sets it apart from other similar operations.