This reminds me of the german house build on Grand Designs that went up in a few days. Prefab is definitely quicker. You can apply factory optimisations to pr

This reminds me of the german house build on Grand Designs that went up in a few days. Prefab is definitely quicker. You can apply factory optimisations to prefabricate - and store materials. This reduces dependencies, and thus delays, and also increases speed. It reduces injuries, waste, environmental impact, building disturbances for neighbours. The quality is also improved. Make a modern factory at every site where you want to build something, or have the modern factory send prefabricated parts?