I live in a small county in the northern ozarks of Missouri. When my wife and i bought our land, I searched in vain for the number for the county's building department to start the process of obtaining permits. There is no such department. I spoke to the county collector who explained the citizens have never supported the idea of having building inspectors, ect.
I built our house without buying one permit or dealing with a single inspector. I dug my own drainfield and installed my own septic tank.
Its nice here. It's a poor county, lots of gravel roads, but their is much more
freedom than in our neighboring county, which has very strict codes. You have to buy a residency permit to live in your house. If you live in a tent on your place for more than a certain amount of time, you can be fined and eventually evicted or arrested for squatting on land that you own.
If you build anything in the neighboring county without the permission of the
local government, you will have to pay additional fines and more expensive inspections from an engineer. If not, no occupancy permit, hence fines, hence eviction, possible arrest if you ignore the fines and eviction.