Thanks for the info, I wasn’t aware of the different home equity factors.
I went and ran the NPC for a few other schools to compare.
Brown: estimated net price $89k, calculated parent contribution $95k
Pomona: estimated net price $74k, calculated parent contribution $72k
Columbia: estimated net price $81k, calculated parent contribution $72k
Vanderbilt: estimated net cost $88k
I ran the Brown calculator again and cut the value of the real estate in half. The estimated net price decreased to $61k and the parent contribution turned into $52k.
Perhaps the online calculators aren’t updated, but it seems that real estate contributes more to the estimated cost at Brown than at other schools. I didn’t realize just how much it raises the costs, but I guess this is something to worry about only if I get in. 