Who We Are

HAA is a dynamic firm with unusual experience depth based in four licensed architects.  We are fully CAD equipped and networked with the capability to complete large projects on demanding schedules.



Our Team of Experts


Henderson Associates Architects, Inc. (HAA) is a full-service architectural firm located in Edwardsville, Illinois, founded by William Henderson in 1976.  For over a quarter of a century, HAA has provided innovative, functional, and cost effective architectural services for a diverse range of clients and project types, regionally and nationally.  After nearly a decade of field experience, Mr. Henderson’s son Jamie joined the firm in 1996 and became both president and owner in 1999.  The firm has prospered and expanded services under Jamie’s expert guidance.  Under his direction, the firm has produced many successful solutions for buildings, cityscapes, parks, and beautiful neighborhoods.  The firm has received several design awards and high praise from repeat clients.


We pride ourselves on maintaining a strong commitment to our client's needs, which has been the foundation for the firm's success and longevity. The practice of providing cost effective and site sensitive design solutions has always been and will contine to be our mission.