In December 2012, VDA (Van Deusen & Associates) acquired San Francisco-based elevator consulting firm Hesselberg, Keesee & Associates, Inc. The acquisition furthers VDA’s mission of developing and delivering vertical transportation solutions worldwide. The addition of Hesselberg, Keesee & Associates brings more than 50 years of industry experience to VDA.

The San Francisco office provides full consulting and design services for new construction, modernization and preventive maintenance related projects on all building types for clients across California, as well as providing construction administration and project support to VDA’s clients in Asia.  A corporate staff of design/field engineers, administrative, marketing and accounting personnel, supports the San Francisco office.