1,600 people in 24 cities living 4 values for 1 goal:
To use design to help our clients succeed.

We create exceptional environments that meet our clients' most complex design challenges.

We inspire people through our work by expressing timeless cultural, organizational and personal values.

We connect people and place with ideas that come from many minds and imaginations.

We care about serving our clients, enriching lives, improving communities and protecting our natural environment through design.

We are a global architecture, design, engineering and planning firm.

60+ Years of Design + Innovation

Patrick MacLeamy FAIA, LEED AP®

Chairman Emeritus
Executive Committee + HOK Board Member

Patrick MacLeamy

Patrick MacLeamy, FAIA, LEED AP, is HOK’s chairman emeritus and a member of the executive committee. He joined HOK in 1967 as a designer in the firm’s founding office in St. Louis. He relocated to San Francisco in 1970 to help establish HOK’s first regional office. After serving in leadership roles in design, project management and marketing, Patrick was named managing principal of the San Francisco office in 1983. He joined the firm’s executive committee in 1995 and became chief operating officer in 2000. Patrick was elected CEO in 2003 and chairman in 2012. In 2016, as part of a planned succession process, he announced that he was stepping down from his position as CEO.

During his HOK career, Patrick has overseen the establishment of several HOK regional offices in the U.S. and Asia. He has held leadership roles on several landmark HOK projects, including the Moscone Convention Center in San Francisco and King Khalid International Airport in Riyadh, Saudi Arabia.

As a pioneer in leveraging technology to support design quality, Patrick led HOK’s effort to organize the firm’s approach to technology through its “Tech 2000” initiative. He is a founder and chairman of buildingSMART International (bSI), a nonprofit organization dedicated to transforming the building industry through the creation and adoption of open, international digital standards for information exchange. By advancing buildingSMART initiatives within HOK, he has positioned the firm to accelerate the industry’s adoption of a seamless information exchange network among all team members throughout the facility life cycle.

He served on the American Institute of Architects Large Firm Roundtable and is a past chairman of the Construction Industry Roundtable.

What is the value of BIM over time?

“I believe that owners can save enough money during building operations to pay for a substantial part of the design and construction of that building. The real promise of BIM is better design, better construction and better operations.”


Change Leader Interview | Informed Infrastructure 

Keynote Address | BIMForum Boston 2014

The Future of the Building Industry | HOK Thought Leadership


University of Illinois at Urbana-Champaign
Master of Urban Design
Bachelor of Architecture