Randy Guthrie – Principal


Arthur Muscovitch – Principal

Randy is a principal of GMA and has over 30 years experience as a licensed architect in Ontario. He is a graduate of the University of Toronto and is a member of the Ontario Association of Architects, the Royal Architectural Institute of Canada and the Building industry and Land Development Association. Randy’s early architectural experience was in large-scale commercial and institutional projects but since 1981 he has focused primarily on various residential project types and facilities related to them



Arthur has practiced architecture and urban planning for nearly 40 years in Canada, the UK, USA and Australia. He holds a B.Arch from the University of Manitoba and a MUP from the University of Illinois. His professional affiliations include the Ontario Association of Architects, Royal Architectural Institute of Canada and the Canadian Institute of Planners. Arthur is a Registered Professional Planner in Ontario and is also licensed to practice architecture in the states of New York and Arizona.

Support Staff

GMA enjoys the support of an energetic and resourceful staff of graduate architects and interns. Our project team is comprised of a diverse group of individuals with an equally diverse range of formal training. The principals of GMA hold that their practice is highly specialized and select team members that demonstrate skills in both residential design and building science. The principals take an active role in supervising individual staff members to ensure continuity of the philosophical and qualitative aspects of the firm and its projects.


PH - (416) 252-5679
770 BROWNS LINE TORONTO, ONTARIO M8W 3W2