A significant chunk of the cost of modular building is in transportation It's a chicken and egg problem. If the market were bigger, there would be more factori

A significant chunk of the cost of modular building is in transportation It's a chicken and egg problem. If the market were bigger, there would be more factories, with one locally sited. there's only just so much you can do for the overall cost when most of it is in materials anyway A big part of the cost is labor. Economies of scale can fix this by making labor far more efficient and replacing part of it with factory automation, but the market has to be big enough to keep many local factories busy for that to work. If a house cost $50k and I could swap it out every 10 years for a newer model on the same property, that might be worth it. Sadly, that is not and will likely not ever be the case. Houses are designed to last only 20 years in Japan.