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

Seeing Justice
in Sustainable Light

US General Services Administration
Alfred A. Arraj US District Courthouse

Denver, Colorado, USA

“The Alfred A. Arraj US Courthouse is an example of GSA's continuing commitment to design excellence.”

GSA Website

The Alfred A. Arraj US District Courthouse is the GSA’s sustainable design showcase.

The lighting design provides a dramatic improvement in energy conservation and environmental performance over a conventionally designed courthouse. Most importantly, it provides a healthy, safe and productive working environment in courtrooms.

HOK’s lighting designers used special lighting techniques in the courthouse’s various spaces, including courtrooms, judges’ chambers, public spaces, the library and cafeteria. The design incorporates natural daylight to significantly reduce electric loads.

State-of-the-art electric lighting systems supplement the use of daylight. These systems use a combination of direct/indirect luminaires with T-5 fluorescent lamps and dimmable electronic ballasts, as well as compact fluorescent and metal halide downlights and wall washers. The illumination levels work in harmony with the daylighting and high-performance glazing systems to provide balanced lighting with low energy consumption.

In courtrooms, incandescent lighting is used only when necessary. Photocell controls work in conjunction with electronic fluorescent dimming ballasts to save energy in areas that are naturally illuminated. In spaces that do not receive daylight, the electric lighting systems provide low-level ambient lighting enhanced with occupant-controlled task lighting. Occupancy sensors control the lighting in private offices.


383,000 sq. ft. / 35,600 sq. m.


Facility Programming
Interior Design
Lighting Design
Master Planning


AIA Colorado – Honor Award

AIA Committee on Architecture for Justice – AIA Justice Facilities Review

AIA Committee on Architecture for Justice – Distinguished Building Honor Award

AIA Denver – Citation Award

Colorado Renewable Energy Society – Renewable Energy in Buildings Award

Environmental Design & Construction magazine – Excellence in Design, Honorable Mention

Masonry Institute of Michigan – Masonry Award

National Center for State Courts – Citation, Retrospective of Courthouse Design

US General Services Administration – Environmental Awards, Model Facility Demonstrations

World Sustainable Building Conference – Green Building Challenge