A tenant broker is a person who helps prospective tenants/buyers locate the best commercial property for their needs and negotiate the best terms. Besides hammering out terms, one of the best things about tenant brokers is that they are almost always paid by the landlord of the office that you are leasing.
In this Power Tip from Remodelers Advantage, Victoria Downing explains how to work with a tenant broker:
"If you have a current lease and think you deserve a better deal than you have, it may help to shop around and find out what else is out there before renewing. To do this, work with a tenant broker who has extensive first-hand market expertise to help you sort through the various available spaces."