Walter H. Keller, Inc., is organized as a Corporation under the laws of the State of Florida. The firm is authorized by the Florida Board of Professional Engineers as an Engineering Business to practice Engineering in the State of Florida. The firm maintains licenses with Broward County, Coral Springs and Martin County.

The firm is also pre-qualified with several jurisdictions.

The Florida Department of Transportation pre-qualifications of June 2, 2011 are noted below: