Yes, Arlo. I have read the Bodewitz article, which is in fact where I encountered the Pandey "Conception of a House in Atharvaveda" citation.
I have yet to see the Pandey article referenced in another source, and potentially this is the reason why my ILL department couldn't find it: perhaps it is cited incorrectly? I noticed, for example, a similar occurance in your and Bisschop's first asterisk from your "The pASupata Observance," in which an article by Modak was cited by Dandekar as pertaining to JKU(H) 9 when if fact the article was in JKU(H) 11. I had originally sent my ILL a request for the article in volume 9 per Dandekar's citation, and then later after they had told me they couldn't obtain it, I saw your asterisk with the correct volume.
Jarrod Whitaker also was interested in the Pandey article, and he mentioned that he would try to request it via his ILL. Maybe he or someone else will have more luck?
See also: Renou, "La maison védique," Journal Asiatique 231 (1939) 481-504; reprinted and translated into English as: "The Vedic House," RES Anthropology and Aesthetics 34 (1998): 142-161. The first few footnotes of this article and its preface by MW Meister list other relevant sources.
Take care,
Charlie