The Association of Architectural Technologists of Ontario is a registered not for profit organization founded in 1969. We are a government of Ontario legislated, self-governing body that regulates the use of titles through the Association of Architectural Technologists of Ontario Act, 1996, AATO BY Law 1-82. We are the only governing authority in Ontario that protects the Architectural Technologist, Architectural Technician, Registered Building Technologist, Registered Building Technician and the French equivalents of these titles.
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