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The Supreme Court of Canada weighted in on the municipal regulation of cellphone towers by ruling radiocommunications is solely within federal jurisdiction under the constitution and municipalities cannot block the installation of towers.
In Rogers Communications Inc. v. Châteauguay (City), 2016 SCC 23, the SCC "reaffirmed Parliament's exclusive jurisdiction over radiocommunication."
Torys LLP, which represented Rogers at the SCC, summarize their viewpoint of the ruling on their website.
The Federation of Canadian Municipalities intervened in the case, along with the City of Toronto, and issued a statement of disappointment.