About Us

Founded in 2010, we are health and sustainablity strategists in built environment projects. We were founded to enable organizations to create truly sustainable buildings. We know how to create healthy buildings. We know how to create efficient buildings. Most importantly, we know how to guide you and your design teams using cutting-edge transformation and change management strategies.


LEED® is one step towards truly sustainable architecture. We are corporate members of the Canada Green Building Council. We know LEED for New Construction, Core and Shell, Interiors and Homes. We have worked on the certification of over twenty projects across Canada.


We wrote the Sustainability Requirements for Infrastructure Ontario and Humber River Regional Hospital for their new digital hospital at 401 & Keele in Toronto. This project was recently awarded an Innovation in Sustainability Award by the CaGBC’s Greater Toronto Chapter. It is world-class and is one of the most efficient hospitals in North America.


Our work goes beyond LEED® consulting. We call this Biologically Integrated Architecture™ and it is a tool to manifest Our Flourishing Future™. We use proprietary organizational development tools to help our clients realize their true objectives and goals in relation to health and sustainability and then we determine the Key Sustainability Indicators™ that are unique to measuring success on your project.

Our Founder

Project Team Lead Sandra Leigh Lester BTech MCOD LEED AP BD+C CSBA, is the Founder, President and CEO of Affecting Change Inc. and personally leads the team on each project. She has 25 years of sustainable design experience in fields of corporate office, residential, retail, mixed use, hospitality, and healthcare sectors and eleven years of sustainability consulting experience

For over two years, she was the in-house sustainable design consultant for HOK Architects Corporation, working nationally, across Canada, and on projects in the Middle East. She was on the international HOK Carbon Task Force and contributed to the development of the Life Cycle Analysis section of the GSA Handbook.

Sandra has a Bachelor of Technology in Architectural Science. Her desire to enable transformation lead her to the achievement of a Certificate in Change Management and a Masters Certificate in Organization Development from Schulich Executive Education Centre.

Sandra is a LEED® Accredited Professional with a specialty in Building Design and Construction (LEED AP BD+C). She is not only a Certified Sustainable Building Advisor (CSBA) but was chosen by the CaGBC to lead the certification course in Toronto.

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