This blows my mind: the Federation of Canadian Municipalities and a number of other groups collaborated to launch a study of cohousing in 1993!
The report, “Planning Cohousing,” was eventually published in 1997.
Despite being 20 years old, it continues to have some good advice, including this:
Cohousing may offer a desirable addition to neighbourhoods, but this may not be readily apparent to everyone. Cohousing groups can only benefit from applying the principle of collaboration to their external dealings with municipal planners, neighbours and city councillors.
Anecdotally, I hear that zoning by-laws often continue to put (probably unintended) barriers before co-housing developments. No doubt early consultation can overcome many of them.