Japan has very high standards for buildings. Their building codes ensure structural integrity during earthquakes, prevent spread of fires, and ban usage of haza

Japan has very high standards for buildings. Their building codes ensure structural integrity during earthquakes, prevent spread of fires, and ban usage of hazardous materials like asbestos. Japan also has environmental building codes that mandate levels of energy efficiency for new buildings. As in the US, they are still relatively new, but have been strengthening over time. If there really is a law in the US against building homes without central heating, then it is a rather idiotic one. I lived in a Japanese apartment without central heating. I bought a $75 space heater and was never cold. The grandparent pointed out that the housing options in SF are luxury condos and $50 tents. Maybe that's because the laws in SF basically prevent developers from building anything in between? "Can't be more than x tall, can't be in these areas, must have x amount of parking, with x kind of heating, x amount of green space, and at least x sq feet per unit, " and on and on. With all those zoning and building regulations, it doesn't really surprise me that the only kind of housing you can reasonably develop and make a profit on is luxury condos.