VDA is an all-inclusive elevator and escalator consulting firm providing services for the comprehensive maintenance, design, and engineering for elevators, escalators, moving walks, dumbwaiters, and lift systems in new and existing market segments. Throughout our past and in our present, these buildings include commercial offices, a variety of mixed-use configurations, Residential towers and condominiums, stadiums, museums, transportation facilities, educational, hotel, religious, retail, and industrial buildings.