TORONTO, ON--(Marketwired - May 29, 2017) - Slate Office REIT (TSX: SOT.UN) (the "REIT"), a leading owner of office properties in Canada, is pleased to announce the closing of its previously announced acquisition of Commerce West, a suburban office complex, located at 401 - 405 The West Mall, in Etobicoke, Ontario for an aggregate purchase price of $95 million ($231 per square foot).