Almost every inch of the US and Canada has a litany of rules saying that buildings have to be 20’ or more set back from the street and have to leave 5-10’ on each side clear on the sides and rear. Usually they are limited to two stories and in some cases only one.
A lot of places take this further with rules on how much of your house has to be brick, or what color the roof can be etc. And since that’s still not enough to please some people’s desire for perfect conformity, most modern homes layer on top of this special HOA rules, for example restricting what kind of window shades are acceptable and how tall and green your grass most be. These rules are enforced by the local municipality and backed by the force of the police.
I have no doubt that there are many people who like single family housing and would buy designs like the common cookie cutter standard if it was part of a truly free market menu, but how much genuine demand exists we will never know, because virtually nothing else is legal and it hasn’t been for two generations now! People generally don’t “want” things they’ve never experienced and have no access to.
Just to drive this point home, imagine we passed a law saying that people were only allowed to eat seafood of certain dimensions and without tentacles. Fish, shrimp, and lobster between 1-7 lbs are OK. No squid or octopus. You can cook them however you want, except no grilled salmon is allowed in Vermont. Any other food requires years of community hearings to acquire one-off conditional approvals on a meal by meal basis.
Would you find plenty of people who liked seafood and defended this system? Yes. Would you know anything about people’s true preferences if they were allowed to be omnivores? No.
That’s what our world has been reduced to, and it’s the product of an almost unfathomably deep and Byzantine regulatory complex by which the government micromanages the built environment around us.