VDA established the Dallas, Texas office in 2016 to provide a local staff to assist the firm’s growing client base in the Midwest U.S. The office provides full design and engineering services for new and modernized building transportation equipment and Maintenance Quality Control Evaluations of existing equipment.

Mr. John O’Sullivan brings over 30 years of experience in the elevator industry. He is responsible for maintenance evaluations, contract negotiations, due diligence evaluations, modernization management, specification writing, new construction management, and new business development. John works closely with Owners, Asset Managers, and Architectural Firms assisting with their vertical transportation needs, and has a vast knowledge of the elevator industry.


3838 Oak Lawn Avenue, Suite 1000
Dallas, TX 75219
Phone: 214-329-4474

John O’Sullivan

Vice President – Marketing & Business Development