As a young man I owned the clothes on my back and a few in a drawer. If someone would have asked me how many socks that I owned, I would not have been able to give a correct answer. A few years and a few jobs later, I owned the same clothes, plus some beer cans in the fridge, and a bunch of tools. I would not have been able to give an accurate number of how many beer cans were in my fridge or how many tools were in my truck at any given time.
Over the years I have acquired more goodies and some junk. In an attempt to become financially successful, I have purchased stocks, bonds, CD's, rental homes, and raw land. I trust a financial advisor to keep track of my "stuff" for me. While I have a general idea how much everything is worth, I have no idea how many shares of XYZ corp I own or even if I own XYZ stock.
While homes represent a bigger value than shares of stock, they still are just an asset. Especially once a person gains some financial success. A house to a financially successful person could be the same as a share of Microsoft to a person making less money. While a first home or share of stock may be a big deal, at some point, a person who buys more of either, may tend to lose track. No big deal. Get an expert to help keep track of those things.
The whole concept of McCain has no idea how many houses that he owns, or that his wife owns, is simply a ploy by libs to get the "jealous class" fired up again.