Tackling Your Most Complex Environments to Make the World Better

We partner with you to envision better environments and deliver critical infrastructure.

We help you seize opportunities and solve your most difficult built environment challenges, mindful of your needs, your client’s needs, and our world’s needs.

Our Projects

Get a flavor of our work, our unique approach and delivery, as well as the breadth and depth of our expertise. We look forward to working with YOU on your next project.

Midwest Multi-Disciplinary Engineering Firm William Tao & Associates Joins Mazzetti

Mazzetti and William Tao & Associates merger expands innovative engineering design and consulting services, nationwide

"My hat's off to Mazzetti for nothing short of a game changing innovation...You all took a big risk, but delivered in a remarkable way.
We all have much to learn from you."

John Kouletsis, Kaiser Permanente

Our Solutions

Commissioning & Retrocommissioning

Our Cx and RCx services span all phases of  work, including planning, design construction, operations, and post-occupancy.

Facility Solutions

Our Facility Solutions pertain to OPPS: Operations, Planning, Personnel, and Sustainability.

MEP
Engineering

Our MEP services are guided by our foursight approach to deliver results, not just blueprints.

Sustainability

Our Sustainability services address new and existing buildings, creating resource efficiency in energy, water, and waste.

Medical Planning Technology

Our Healthcare Technology/IT Consulting services span the full continuum of systems and equipment.

Lighting Design

Our  Lighting Design Studio intersects the art and science of light into beautiful, environmentally responsible, affordable lighting solutions.

Our People

Meet the people of Mazzetti. We are change leaders, collaborative entrepreneurs, strategic planners, and seasoned engineers. We are a team of diverse individuals, not afraid to show our unique “flipsides”.