You'll likely be dealing with super adequacy. Reminds me of a building I appraised quite a while ago. On the outside, it was a typical light industrial building. On the inside, it was one of about 7 such facilities around the country that specialized in art and document restoration including clean rooms, clean drive in bay, super climate control, and super secret squirrel security system. There was nothing in the market like it. Millions of dollars invested in a building worth about $300k due to super adequacy. Those were not happy campers.