I wouldn't say it is harder, it just costs more. And an underground house is not the sort of thing to cheap out on because of the difficulty of repairs. A chea

I wouldn't say it is harder, it just costs more. And an underground house is not the sort of thing to cheap out on because of the difficulty of repairs. A cheap above ground house can have tons of repairs done, that shouldn't have had to have been done in the first place, but weren't prohibitively expensive to do anyways. An underground house can't just have new vinyl siding slapped on top of the old super garbage shit because you have to dig it up. So you have to spend the money upfront, rather than kick the can down the road.