Kumlin Sullivan Architecture Studio Ltd. (KSAS) is a dynamic full-service architectural practice based in Alberta and British Columbia, with registration to practice in Manitoba, Saskatchewan, and Ontario. Founded in 1998, the firm builds on a legacy of design excellence, drawing from over 27 years of history. Lead by the firm's Principals Barry Sullivan, Will Craig, and Alexa Collopy, the firm has successfully delivered more than 1,500 projects across Canada

KSAS offers comprehensive in-house architectural, interiors, master planning, and visualization services—from initial concept and planning through to construction documentation and contract administration. Our balanced, collaborative team combines creative vision with technical precision, allowing us to lead complex projects of varying scales while maintaining agility and personalized service.

A hallmark of our approach is the consistent involvement of a Principal throughout all project phases; providing leadership, accountability, and team continuity from conception to completion. Our clients value this direct engagement, which ensures that project goals, design intent, and key decisions are carried forward seamlessly. Our portfolio reflects thoughtful, high-performing design that contributes lasting value to communities and the environment.