I live in a former socialist country that somehow managed to build A LOT of housing in the 70s and 80s, with shitty equipment, but somehow cannot build anything in the last few decades. And not just the government building stuff... normal people could buy a plot of land, get their friends to help, dig a hole and start building... a small loan for bricks and cement, and the basement + a concrete slab was built... then a month or two went buy, and what was left from the paychecks went for a pallet of bricks plus a few bags of cement, and half a floor was made. Repeat for a few years and a house was there... no insulation or a facade, but people could live inside and deal with that later. Papers and permits? As long as you built within some basic rules (far away from the property line and not a too unusual shape), you could basically ignore them, and deal with the "legalization" later. Now you're not allowed to build basically anywhere, papers cost more than the whole material+work did back then, and you're not allowed to do anything by yourself and your friends are not allowed to help anymore. So yeah... good luck.