It started with a vision.

“It Starts With A Vision” remains more than just a motto to HDA; it is how the company truly began and has continued to grow. In 1986, Jack Holleran (President) and Mark Duitsman (Retired) envisioned a Professional Service Firm providing exceptional design and customer service. Through their journey, the HDA staff has designed over 100 million square feet of projects in 44 states at a construction value of over $3 billion.

“I engaged HDA because of their expertise and reputation. This project was very complex being the first LEED Certified Lexus Dealership in the nation. HDA exceeded my expectations in regards to their design and customer service. I am extremely happy with my decision to work with them.”

RAY MUNGENAST

Owner DAVE MUNGENAST LEXUS OF ST. LOUIS

“HDA’s design capabilities and the team of consultants really helped us streamline the process of meeting an aggressive budget and timeline.”

CHRIS LYNCH

PRINCIPAL WHITE OAK REALTY PARTNERS

Jack Holleran

President

As President of HDA, Jack reinforces strong leadership within the company, taking an active role in programming, conceptual design, and project strategy.  He chairs the Executive Management Team, while his 50 years of experience includes various projects ranging from Beverage, Office, Interiors, Multi-Family & Hospitality, Retail & Commercial, and Distribution & Warehousing.