When it comes to office space, Highwoods Properties takes the road most traveled, especially if it runs through the Southeast. A self-administered real estate investment trust (REIT), the company owns or has an interest in more than 300 commercial properties totaling more than 28.5 million sq. ft. of leasable space. The REIT's holdings include mostly office properties (which generate more than 90% of its total revenue in the form of lease income) but also industrial and retail properties in about a dozen metropolitan markets the Southeast and Midwest. Its largest tenants include the federal government, MetLife, and PPG Industries. Highwoods also owns more than 520 acres of undeveloped land.