Let Us Elevate Your Standards


Our work has stood out in green design and construction for its ability to integrate strategies and novel technologies in a way that delivers high-performance results. Using low-carbon design, and building science diagnostics to complement the architecture and construction, we help ensure your projects deliver innovative results, time and time again.


We are innovators in the building science industry known for providing critical guidance and analysis on energy systems design, that minimize first costs and lower operating costs.

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What good is a high-performing building if it’s uncomfortable? Green buildings are ultimately about creating environments for high-performing people. It starts with efficient and unparalleled comfort.

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low carbon

Evolve Buildings has the experience in bringing low-carbon visions to life. We bring purpose and vibrant integration in building science, mechanical design, and high performance architecture to help deliver a decarbonized future.

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certified and capable

We are a full-service green consultant, helping your buildings achieve third-party certification through LEED, HERS, ENERGY STAR, PHIUS, and many other zero energy / green building programs.

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When undergoing a major 2-story addition and “green” upgrade to our 100-year old home in a historic district, Jason was a great help in demystifying the steps to take in approaching the process efficiently, effectively, and with the intended outcome. Jason gave us the information, education, and confidence we needed to successfully incorporate environmental systems and features into our home rehab, by managing with us the LEED registration process as well its related energy testing, improvements, and rating. As “laypeople,” we don’t see having been able to conduct our project successfully — and with the full support needed for its numerous “green” features — without Jason’s involvement.

Ana Garcia-Doyle

Knowing and working with Jason both personally and professionally over several years has been great. He is an insightful and positive individual who is committed to the mission of sustainability and green building. It’s been great to see his company flourish from the start and to be a part of all the good he has done in moving the market forward in Chicagoland and beyond. I always look forward to discussions and collaboration with Jason and his team.

Brett Little

Meet Our Team

We have the vision and experience to transform the built environment for a low-carbon future putting ideas and technology into practice with efficient planning and seamless cohesion each and every time. Jason has led commercial and residential projects, and pushes the envelope through his role as a Voting Member of ASHRAE committee SPC 227 – Passive Building Design Standard.

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Jason LaFleur

Jason LaFleur