The change is already there, prefab build techniques lead to construction companies keeping everything in-house - from crane operators to plumbers. The building

The change is already there, prefab build techniques lead to construction companies keeping everything in-house - from crane operators to plumbers. The building is split into parts that can be built in-house and then assembled on-site - the aim is to have the structure with a roof on it as quickly as possible, since that makes you more independent of weather for finishing it. Especially for warehouses and facotries it's really impressive. It's the difference between trying to take the factory to the site and just taking the parts to the site. Also, as far as I understand, 3D-printing concrete does not give you any way to construct larger buildings, where you need pretensioned and reinforced parts...