Believing it’s a right is not enough. It needs to be affirmed by the courts and/or parliament.
It hasn’t been affirmed as a right.
Canada is signatory to International Covenant on Economic, Social and Cultural Rights which does recongise housing as right and early in his first term Trudau affirmed the commitment (even if it's not in constitutional right).
I think it becomes a murkier issue what 'housing' is. Is it the right to live within four walls and not on the street or being able to afford a four bedroom house and den within an hours drive of a major city?