I'm very late in the discussion. But what does the house owner plan to do if his equity in it (net after liabilities) has ballooned to an overwhelming proportion after his purchase? Will he take out additional mortgages to bring his equity down proportionally? What if his equity drops afterward? Sell his other investments and pay off his mortgage? Would he be planning to do this analysis every year to balance everything he owns?
When I purchased my first houses over 30 years ago, buyers were required to put down 20%. Nowadays, it's 10% or even 5%. So it may be relatively easy for someone's equity to double based on leverage and real estate appreciation.
The real question about this "net worth" is "why".
Net worth for me is an intellectual curiosity of little real worth.
When I die and it's liquidated it will be more applicable to the kids.
Net worth is nice if you want to measure "financial success", but that's a silly game, for me, money is a tool.
Do I have enough of the right tool to accomplish the task?
My stocks spitting out dividends are a tool, hopefully they will eventually be enough to handle the task of supporting my lifestyle.
My household equity, really doesn't do much other than secure my home and avoid rent, irregardless of $ value.
I think of "investible assets" as more useful than net worth.
I wouldn't take out a mortgage to invest in bonds so I hit some silly imaginary ratio