See also: US suburbs in the streetcar era, which were built just densely enough that it was practical for everyone to walk to streetcar stops. You can see what'

See also: US suburbs in the streetcar era, which were built just densely enough that it was practical for everyone to walk to streetcar stops. You can see what's left of that period in some neighborhoods of cities like Boston and San Francisco, where row houses that were once mass-produced to appeal to the middle class have become multi-million-dollar 'luxury' homes almost entirely from the total unavailability of that kind of housing and living style elsewhere. The equivalent mid-density construction is basically nonexistent in new construction today because of exclusionary zoning. It's only recently that some states have started forcibly re-legalizing this sort of thing by overriding local zoning codes, and it will still take decades at best for new construction to really catch up.