Below is a list of links which go along with our article and video on what you need to know before leasing commercial real estate.
The Lipsey Company: List of the largest commercial real estate brokerage firms.
Coy Davidson: Understanding rentable vs. usable square feet.
About.com: Percentage lease calculations
NuWireInvestor: How to avoid CAM cost surprises
Mintz And Gold: How to avoid rent escalation surprises
Officespace.com: Their FAQ section