Sustainability / LEED

Sustainability is a critical component of our practice. Our designers are constantly researching emerging strategies, best practices, and new tools as part of our comprehensive approach to sustainable design. At the beginning of a project we consider broad-based site and planning analyses before identifying energy-saving systems, time-saving construction methods and healthy indoor materials in order to respect natural resources and minimize a building’s environmental impact. We frequently collaborate with sustainability experts and consultants to identify creative and cutting edge strategies for our clients.

We have 37 LEED Accredited Professionals in our firm and we have more than 29 Certified or Registered projects making us a state-wide leader in green design. While LEED achievements are noteworthy, our focus on sustainability has led to user-friendly facilities that perform very well. Energy-modeling technologies have allowed us to analyze the life-cycle cost and payback periods for various energy efficiency strategies. Sustainable design strategies are transforming the way we design and detail facilities and are having a dramatic effect on the success of facilities as measured by operational cost and user experience.

LEED Projects


Agricultural and Biosystems Engineering, Iowa State University Gold
Allsteel Offices Silver (EB)
Allsteel Plant Silver (EB)
Ankeny City Hall and Library Silver
Hancher Auditorium, University of Iowa Gold
National Czech & Slovak Museum and Library* Gold


* Designed by other firms. OPN provided LEED consulting or documentation services.