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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.


On Track for a LEED Gold Prison in Iowa

Iowa State Penitentiary
Fort Madison, Iowa, USA

“HOK works well in a collaborative team atmosphere. They truly work with and listen to stakeholders to arrive at the best design possible. This was no small feat considering the many levels of stakeholders and detail involved in a state-funded project of this magnitude.”

Brad Heir
Deputy Director, Iowa Department of Corrections

The team is aiming for LEED Gold certification for this 800-bed maximum-security correctional center, which is replacing the state’s 19th-century facility.

This new prison will house 350 more inmates and is expected to use about half the amount of energy to operate.

“They’re using every efficiency that is available to make it effective in providing security and also as economical to operate as possible,” Iowa Board of Corrections member Charles Larson said in The Hawk Eye.

The eight-building campus includes three housing units, as well as facilities for medical treatment, mental health, food services, laundry, prison industries, offender activities and a new administration building.

Elements of the Iowa landscape, including natural plant material and healing gardens, create a campus-like environment.

HOK is collaborating with Durrant and Venture Architects on the design.


LEED Gold anticipated


472,000 sq. ft. / 43,850 sq. m.
800 beds


Landscape Architecture
Master Planning


AIA Justice Facility Review – Exemplary Justice Desgin


Increase in energy efficiency over code requirements



24 October 2014
“David Dillon Symposium in Dallas Tackles the Theme of Building the Just City”

30 October 2013
“Iowa Upgrades Correctional System with Two New Facilities”
Correctional News

May/June 2013
“Maximum Design”
Correctional News

1 October 2011
“New Prison Construction on Target”
Daily Gate City

8 July 2011
“New Prison Takes Shape”
The Hawk Eye