CoStar has made a name for itself in the national real estate market by supplying commercial brokers and investors with an inclusive Internet database of properties, tenants and market news for evaluating opportunities. Touting CoStar's vast resources, President and CEO Andrew C. Florance says that "with our comprehensive national coverage and sophisticated research process, it makes sense for commercial real estate firms operating in multiple markets to rely on CoStar's standardized data and information."

Equity Office has a local presence in 38 markets and with 125 million sf of primary Class A property, it is the largest real estate investment trust and publicly held owner of office properties in the country.