We are constantly listening, learning and adapting. That defines what we do.
It is our commitment to sustainability, that defines who we are.
Together, our vision is to create transformative environments, having fun in the process.
B.A., M.E.Des.(Arch.), OAA, FRAIC, LEED AP
As Co-founder and Director, Joanne provides direction and oversight on a full range of building typologies. Her work is informed by vigorous research and careful client consultation, working from first principles in a way that thoughtfully translates her clients’ needs into physical reality.read more
B.Arch., OAA, MRAIC, LEED AP
Co-founder and Director, Greg is responsible for design direction, sustainable design initiatives and providing technical excellence oversight for the firm’s projects. His experience with the design of high performing spaces has resulted in ground breaking projects and firmly established his reputation as a leader in sustainable design.read more
Hons. Vis. Arts., B.Arch., OAA, MRAIC, CAHP
As Director, an artist and businessman, Drew is passionate about shaping environments that put our clients’ business and Research objectives at the forefront. He has been instrumental in providing award winning design solutions that establishes a precedent or prototype.read more
Principal, Interior Design Lead
NCIDQ, ARIDO, IDC, LEED® AP
Dora has shaped beautiful and impactful interiors, from complex healthcare projects to multi-unit residential developments. She brings a depth of understanding in how to creatively connect the science of design with our clients’ objectives, delivering spaces that meaningfully advance our clients’ goals.read more
MAATO, OBEC, LEED AP
Michelle embodies exceptional knowledge and management skills related to the construction process. She is responsible for the firm’s field review services and provides critical peer review oversight on all of our documentation, ensuring projects meet or exceed the firm’s exacting standards.read more
Kevin Van Hartingsveldt
Dipl.T.(Arch.), LEED® AP
Kevin brings an exceptional attention to detail and technical understanding to each project. Kevin has been with mcCallumSather since 2008, serving clients in the healthcare, institutional, civic, transportation and residential sectors. Working as both a technologist and project manager, he consistently demonstrates an ability to efficiently manage complex projects of all size and scope, to […]read more
Mechanical Engineering Lead
P.ENG, LEED AP BD+C
An enthusiastic leader, Mary offers extensive experience in HVAC, fire protection, plumbing and medical gas system design. As the firm’s mechanical engineering lead, one of Mary’s specific strengths is in project management and problem solving, ensuring that all mechanical solutions seamlessly integrate into a project’s design.read more
Heather brings years of financial and business experience to mcCallumSather. With her professional Chartered Accountant designation and Masters of Accounting degree, she ensures that all aspects of the business and all projects are managed with financial integrity.read more