Earth Sheltered = hard to find comparables
My uncle built an earth sheltered house in St. Paul, MN back in the early 80s and still lives there, but it's hard to find any kind of direct comparison to it for utility usage. Most houses that size that are above ground aren't made of concrete, for instance.
I can send him an email and ask.
Before you fantasize too much on earth sheltered houses, let me warn you that waterproofing gave him fits for the better part of a decade. For a while there, he had a guttering system inside his house and that, believe it or not, was the greatest success he had for quite some time before getting a better handle on it. Ultimately he wound up scraping all the overburden off to completely replace the membrane. I think some other stuff got done too, but I'm not sure.
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