Ontario Association of Architects (OAA), the Association of Registered Interior Designers of Ontario (ARIDO), and the Association of Consulting Engineering Companies–Ontario (ACEC–Ontario) write to Infrastructure Ontario regarding their serious concerns with certain terms included by IO in its Supplementary Conditions to both the OAA 600 – 2021 Standard Form of Contract for Architect’s Services and the CCDC 31 – 2020 Service Contract between Owner and Consultant.

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