Established in 2010, the goal of affectingchange was to reduce our greenhouse gas emissions from buildings significantly. We have worked on many projects over the last ten years and have saved our clients hundreds of thousands of tonnes of carbon. Our goal for the next ten years is to shut down coal-fired plants across North America. Shutting down coal plants resonates deeply with our mission for social justice, equity, and the mission to create a flourishing future for all of humanity.

How do we do this? We look at buildings differently.

We start by using our exclusive organizational change and development tools to determine your organizational values and goals for the project. This is much more than a checklist. Not only is the typical payback, ROI, or NPV included, but we also do a carbon risk management assessment.

Knowing the goals, we go right down into the design process with your design team. We know where and when to use state-of-the-art specialty modelling and tools to ensure your building will be truly high performance.


Sandra Leigh Lester

Founder & CEO

Hi, I’m Sandra. I’m a sustainable design guru that has created many game-changing projects that have set precedents and have won, in total, over seventy-five awards.

When I was eleven, my life suddenly changed after an F4 tornado struck my town and my family went to help. It was like a war zone. I have been emotionally connected to weather disasters ever since and it explains why I am so passionate about mitigating the effects of climate change.

My architectural design thesis at Ryerson University was, “Exogenesis: a manned mission to Mars” and that was back in 1994… so I am a futurist that has since decided that we should focus on fixing things here on Earth. As an optimist, I believe that we can enable our society to lessen the impacts of climate change by significantly changing how we manage our built environment. 

Decades of design experience, my qualifications as a registered Designer for interior spaces and small buildings (ARIDO IDC) and a Masters Certificate in Organization Development (MCOD) enable me to help my clients to use design as a tool to reach their high-performance potential. 

I am a LEED-Accredited Professional with a Specialty in Building Design + Construction (LEED AP BD+C) and I taught the LEED-accreditation prep course for HOK Architects. But there is more to sustainability than LEED, so I became a Certified Sustainable Building Advisor (CSBA) and taught the Certified Sustainable Building Advisor course for the Canada Green Building Council.

I have a passion for health and wellbeing, and I am a Certified Personal Trainer, Zumba Instructor, and a CHEK Holistic Lifestyle Coach.

In my spare time I advocate for climate change solutions and run the non-profit, Cleantech Innovation Centre. I was a volunteer Community Engagement Leader for Project Neutral. I have been trained by Al Gore as a Climate Reality Leader and I am available for speaking engagements upon request.

Our CEO, Sandra Leigh Lester, has worked with, been seen on, or has spoken at the following conferences: