Ok. It is a ranch built into a hill with a partial walkout basement that is finished. I would have done the ansi exception and compared it like that. (No, the lower level does not function as a GLA level... it's a typical finished walkout basement)
Now i'm going to be brutally honest with you. It is a double wide looking pig with tons of functional utility issues. You putting lipstick on it won't bring that much value to it, and it doesn't matter that you used high end designer lipstick. You would have better tearing that down, regrading and rebuilding.
There is no comparison to that comp of way superior functional utility that you posted earlier (see photos below).
Yes, the appraiser should have done the GXX001 exception and called it a ranch with a partial walkout basement... but I doubt you'll get better value if the comps looked like this, with nice flat gentle sloping lot and typical grade with nice large windows all around.
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View attachment 74121