CB Richard Ellis Group Inc. was ranked the No. 1 U.S.-based commercial real estate brokerage firm for the fifth year in a row by National Real Estate Investor, a magazine for professional real estate investors.

The ranking is based on the aggregate value of sales and leasing transaction completed globally during 2007.

CB Richard Ellis was responsible for more than $264.2 billion of global sales and leasing transactions in 2007, this total was 55 percent more than its nearest competitor.