Walter Propps started the company in 1972 as a development and brokerage company. A construction company was later added. The company mainly performs sales and does property management along with leasing for commercial properties, but Commercial Brokers has constructed or helped develop multi-tenanted, office and warehouse buildings, including a warehouse for Kolker Poultry and the Orkin Pest Control headquarters. Most of the brokerages the business is involved in are Maryland properties, but it has branched out to much of the Washington, DC area.