In the US you typically have to make sure the land is in the right "zoning" for manufacturing, but that's typically not too hard to find. How easy it is to get preexisting land changed varies widely. If it's agricultural land, that often won't need rezoned in places with cumulative zoning: https://matthewminer.name/law/outlines/1L/2nd+Semester/LAW+5...

Then you probably need a building permit, but they usually just need the plans for the building to be built for that.