We have an optimistic view of humanity, and we believe in the potency of using design and art as a tool for actionable change.

At Mason Studio, we design thoughtfully and care deeply, guided by our innate need to “make better”. This is not just to affect the world but to understand both the opportunities we have and the possibilities we can create to bring real value to society, an experience or a personal moment in a meaningful way.

Our team is diverse academically, culturally and personally - and we bring our whole selves to each of our projects to express the richness of humanity and enhance the value of the design experience. While all our designers are trained in interior design, we have expertise in architecture, furniture design, human sciences, art consultancy, art history, fine arts, textile design, graphic design, business, finance and economics.

We have had the pleasure of partnering with worldwide clients to co-create unconventional and successful solutions.

Select clients include:

Oxford Properties
Hazelview Properties
Great Gulf
Lifetime Developments
Daniels Corporation
Slate Asset Management
Marlin Spring
China Resources
Alo Food Group
Hyatt Hotels
Kimpton Hotels
Viceroy Hospitality Group
Kemmons Wilson
Innvest Hotels
Valor Hospitality Partners

Mason Studio believes that Business is a Force for Good. To stand behind our philosophy, Mason Studio has committed to being a B Corp certified service provider.

Co-Founder, Executive Director

Ashley Rumsey


Ashley Rumsey brings the highest standards to both the design vision of projects and the management of the Mason Studio team. An advocate of purposeful design, Ashley has been a key part of the development of Mason Studio’s innovative research-based process. She ensures design decisions are thoughtfully evaluated based on their potential contribution to the end user, design process, and client’s goals. Her collaborative approach ensures a broad-based perspective, leveraging the skills and knowledge of the entire team to fully inform each design project. As a respected leader in the Canadian design community, Ashley has also been featured in international design media and regularly participates in thought leadership at notable conferences and events.

Co-Founder, Creative Director

Stanley Sun


Stanley Sun’s vision is informed by a unique blend of formal studies in human sciences, fine arts and interior design. Approaching each challenge with a combined scientific and humanistic perspective, he first observes how people experience and react to the built environment to create a rational and intuitive design solution. Of particular interest to Stanley’s practice is the science of light and the physiological and psychological response people have to light. As an advocate for Canadian design, Stanley has been published widely and has participated as a keynote speaker at leading design conferences. He is also a sessional instructor at his alma mater, Toronto Metropolitan University.



+1 (416) 761-9736