That is incorrect. If the basement has has an exterior entrance, then it is either a walk-up or walk-out basement regardless of whether or not there are interior stairs. The selection for interior stairs in only selected, only in cases in which basement access is only from the interior. Here is the actual UAD spec for this field - Notice that the selection of "in" is for Interior-only access:
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I have ZERO experience with basements.
Bemused by your comment.I get about 1 basement every ten years.
This is like the "Does a pool add value question?", but reverse the geography.
The OP mentioned they found paired sales. I'm also curious how it played out.Gotnoworrys: How much value ($/sf and % of above-grade) did you extract from the basement? What % basement value of basement cost did you find?