See also a related video by About Here: https://www.youtube.com/watch?v=iRdwXQb7CfM https://www.youtube.com/watch?v=iRdwXQb7CfM which mentions this very perti

See also a related video by About Here: https://www.youtube.com/watch?v=iRdwXQb7CfM https://www.youtube.com/watch?v=iRdwXQb7CfM which mentions this very pertinent section of the US National Housing Association Proceedings (1913), p.212: "Do everything possible in our laws to encourage the construction of private dwellings and even two-family dwellings, because the two-family house is the next least objectionable type, and penalize so far as we can in our statute, the multiple dwelling of any kind... if we require multiple dwellings to be fireproof, and thus increase the cost of construction; if we require stairs to be fireproofed, even where there are only three families; if we require fire escapes and a host of other things, all dealing with fire protection, we are on safe grounds (compared to zoning regulations based on race), because that can be justified as a legitimate exercise of the police power[...] In our laws let most of the fire provisions relate solely to multiple dwellings, and allow our private houses and two-family houses to be built with no fire protection whatever"