
Climate-Resilient New Building Meeting Step Code 3
Located in East Vancouver, this multistorey building was designed before all of the seasons of wildfires hit Canada and will be able to filter out wildfire smoke. Designed to be earthquake resistant, energy efficient to BC Step Code 3, and designed to deal with a future climate that is hotter and more humid.

Award-Winning Eco Resort
Treading lightly on undeveloped land, this 29-room inn and community centre in the remote subarctic was designed with a robust building envelope built to last 500 years, 100% fresh air ventilation, wood biomass boilers, tertiary waste treatment system, water efficient fixtures, and non toxic eco friendly interior finishes as well as a commercial kitchen designed for slow living.

Sustainable Condo Interior Design
Renovations provided opportunity for a more efficient layout accommodating ageing-in-place. Nontoxic millwork, with eco friendly non toxic finishes were used throughout, along with new energy-efficient appliances and lighting.

Multi-Tenant Commercial LEED for Existing Buildings Certification
Energy and water audits found opportunities to upgrade this building and short paybacks. Engagement with the tenants found opportunities for green purchasing, shielding light during the bird migration season, nontoxic green cleaning and less harmful snow removal proceedures.

First LEED Platinum House in the Greater Toronto Area
Salvaged wood and brick structure, FSC-certified wood interior with daylight, natural finishes, fresh air ventilation, airtight construction, geothermal heating, solar photovoltaic system. Designed for multi-family use and adaptability.

Award-Winning Humber River Hospital
2nd-most energy efficient acute care hospital in the world uses automatic tinting windows to prevent solar heat gain, 100% fresh air ventilation, LEED-for-Healthcare grade nontoxic interior finishes, green roof, and more.
We are affectingchange, a female-owned Canadian green building consulting practice. We help architects and building owners across Canada create and certify their green buildings faster—without the headaches.
Our Story in Green Building Consulting
We’ve been a pioneering force in green building consulting, helping to create groundbreaking projects across the country.
Our projects include the first Ontario hospital with 100% fresh air ventilation, an award-winning five-star inn on the shores of Newfoundland, the first LEED Platinum house in the Greater Toronto Area, plus we empowered the TAF Towerwise retrofits with an award-winning competitive procurement process.
We not only help you make a space environmentally friendly, but also help you use design as a tool for empowerment.
With projects from across Canada and in the United States, we make a difference on projects that see more to green building consulting than just a plaque on the wall. Explore our green building consulting services to see how we can support your next project.
At the core, we believe that design decisions shape our built environment—and we need creative sparks that keep us going in a time of overwhelming change. Rather than assist you create design that focus on lessening harm, we help you craft buildings that uplift occupants and communities.
Daring to dream beyond the ordinary; we transcend ratings and standards. We use systems thinking and organizational change strategies to bring together stakeholders, find leverage points, assist organizations in self actualizing and forging a future that empowers us all.
Our Approach: Tech-Enabled Consulting for Better Results
We host design charrettes (brainstorming sessions) using a transformative integrative design process, informed by MIT’s Presencing Institute’s Theory U, using state-of-the-art digital technologies such as Miro, and Zoom.
Then we bolster communications between team members on our enabledchange™ online platform. This creates an online space where communication happens continuously within subsets of the team.
This is where deadlines are set, progress happens, and documentation is organized. We’re your partners in progress. You’ll pay for one license, and bring your collaborators in for free. Book a demo here:
Why a Female-Owned Canadian Firm Makes a Difference
We know that it is important to have diverse voices at the table, but are there diverse voices within your design team? We’re proudly female-owned. When you hire us you get a diverse perspective as a baseline. We know that this is one of our strengths.
Our strength lies in perspective: our Founder brings lived experience as a woman in midlife, navigating neurodiversity and chronic illness. This holistic view shapes every strategy we create.
If you’re looking for a more inclusive approach to green building, let’s talk. Book your free intro call here.
Proven Results in Green Building Consulting
We have a track record of creating groundbreaking high-performance buildings and winning grants for our clients.
We are proud of helping a design team hit Step Code 3 at no additional cost for a complex building, and building in a high level of air filtration to deal with wildfire smoke. We are especially proud of landing grants for everything from upgrading HVAC systems and domestic hot water systems to procuring infrastructure in indigenous communities that would address food insecurity.
We have been in operation for over 15 years, and we are trusted by architects, developers, and nonprofits across Canada.
Recognized in Leading Industry Directories for Deep Retrofit Green Building Consulting
affectingchange is a proud member of the Toronto Hydro Cleantech Services Directory and is listed in the BOMA Enspire Service Provider Directory. These recognitions highlight our proven expertise in existing building green building consulting and our trusted role in advancing sustainable, high-performance deep retrofits on buildings across Canada.
Start Your Project Today
Access our expertise in green building consulting and our unwavering commitment to your goals. Together, let’s shape spaces that not only meet your needs but radiate sustainability, sparking a movement. Book your free strategy call today.
Founder and CEO
Sandra Leigh Lester
BTech(ArchSci) MCOD ARIDO IDC CPHD CSBA LEED® AP BD+C
Director of Sustainable Building Consulting
Sandra is a nationally-recognized green building consulting expert and leader of groundbreaking deep energy retrofits and community transformation projects across Canada for over 30 years. As the head of our green building consulting firm, she not only represents a diverse perspective, but is a natural systems thinker, a problem solver and a vision holder for a better built environment.
Her experience covers architectural design, building envelope design, shoebox energy modelling, interior design, charrette facilitation, deep retrofit design, grant writing, and project management.
Sandra provides sustainable design coaching, green building consulting, BOMA BEST Sustainable and LEED certifications, energy modeling, and project management services. She is a sought-after guest speaker, facilitator and expert advisor working on projects across North America.
Credentials include: Bachelors of Technology in Architectural Science, Toronto Metropolitan University; Masters Certificate in Organizational Development, York University; Certified Sustainable Building Advisor; LEED-accredited Professional in Building Design and Construction; and Certified Passive House Designer.

Green Building Consulting Services
At affectingchange, we specialize in helping architects and building owners create and certify sustainable buildings faster—without the headaches. As a female-owned Canadian consulting firm with 15+ years of experience, we’ve guided projects across North America from design through certification.
Our services cover every stage of the journey:
- Certification support for BOMA BEST, LEED, Green Globes, Passive House, and more
- Customized sustainability strategies tailored to your performance goals
- Energy modelling and net zero pathways to cut costs and carbon
- Water audits and conservation planning for fast savings
- Climate risk and resilience strategies to prepare for future conditions
- ESG reporting and carbon footprint consulting for portfolios and investors
- Deep retrofits and Passive House expertise for high-performance buildings
- Interior design services that create healthy, biophilic spaces
We combine technical expertise with our enabledchange™ platform, streamlining communication, documentation, and project management.
👉 Explore our full services or book a free strategy call to discover how we can support your next project.
Let’s Work Together
Let’s create your next high-performance project together. Book your free intro call today.