A Mission-Driven Sustainable Engineering Firm
Over 50 years of creating solutions that solve your problems – and the planet’s.
Engineering Sustainable Solutions That Matter
Most of our clients return for our effective solutions, but all of our customers leave with efficient building operations that save energy, save time, and cut costs. At Grumman|Butkus Associates, our dedication to being sustainable design engineers who put people and the planet first has led to decades-long partnerships with clients and hundreds of millions of dollars in energy savings.
“A commitment to energy conservation and customer service inspired the founding of our firm. Fifty years later, it’s still the bedrock of every project.”
Dan Doyle, Chairman – Illinois
Improve Your Building Systems. Impact The Planet.
With innovative energy efficiency consultants at your side.
You need your facility to operate at its best, and we’re here to help you go beyond that. Our LEED and energy efficiency consultants have the expertise to create effective solutions that will benefit both your bottom line and the environment.
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Customer Satisfaction
Licensed Professional Engineers
LEED Projects
Commissioning Group Engineers
Effective Data. Efficient Designs. Sustainable Engineering Expertise.
Find the strategies you need to operate at your best and improve your bottom line with proven analytical, design, and commissioning expertise.
Multidiscipline Sustainable Engineering
We haven’t met a problem we couldn’t solve.
“Grumman|Butkus Associates has been a valued partner with Hyatt since 1984. Their professionalism and quality work continues to make them a trusted team member on our equity portfolio projects.”
Fred Brandstrader, AIA, Hyatt Hotels
Careers
Design. Build. Innovate.
Turn your passion into a thriving career at GBA.
If you’re an entrepreneurial engineer who thrives on solving the unsolvable, GBA is the right career move for you. When you join GBA, your ambition will be supported by experienced engineers who know what it takes to succeed – in the field and as a team.
Awards
177 Awards for Engineering Excellence – and Counting
What we do wouldn’t be recognized without a commitment to creating the facilities clients need to operate at their best. For over 50 years, that commitment has been acknowledged through international, national, regional, and state-level engineering awards.
Take a look!
News
We’re Evolving. See How GBA is Pushing Sustainable Engineering Forward.
Explore the latest news, projects, and events at Grumman|Butkus Associates.
GBA Promotes 10 Employees
GBA's Chicago, Milwaukee and New York regional offices promoted 10 staff members at the recent semi-annual meeting: Fiona Martin McCarthy, PE, QCxP, BEAP, LEED AP, and Luis Contreras, CEM, BCxP, CEA, LEED AP, were promoted to Associate Vice President. Alex Schultz,...
Untangling the Wires: Building Automation System IP vs. MS/TP Network Topologies Explained
By: Douglas Frey, PE, LEED AP, Vice President In the world of building automation systems (BAS), the network topology you choose can make or break your system’s performance, scalability, and ease of maintenance. Whether you're working with legacy systems or designing...
Before You Design That BAS: Questions Engineers Should Ask Building Owners and IT Teams
By: Douglas Frey, PE, LEED AP, Vice President Let’s be honest: Designing a building automation system (BAS) today isn’t just about controlling HVAC and lighting. It’s about navigating firewalls, VLANs, cybersecurity frameworks, and cloud policies. If you’re an...