Owners of $5m–$10m homes: how much wealth do you have outside your home?

For people who own a primary home currently worth roughly $5m–$10m, what do the rest of your household finances look like? Is the equity in your home most of your wealth, or do you have substantial investments, business interests or other assets alongside it? I’m also interested in hearing from people who know homeowners in that range well enough to comment on their finances. I’ve been looking at Sydney house prices, so my examples are in Australian dollars, but answers from anywhere are welcome—please mention your location and currency. I’m mostly thinking about the primary home, but I’m interested in secondary residences for personal use too. A separate breakdown would be useful, rather than grouping them with rental properties or other investments. The $5m–$10m refers to the home’s current market value, not the owner’s total net worth. When comparing the home with the owner’s other wealth, I mean home equity after subtracting the mortgage, measured against total household net worth, including the home and after all debts. What got me thinking is seeing neighbourhoods with lots of homes in this price range and wondering what their owners’ finances actually look like. For example, assuming no debt: Household A: $8m home + $2m in other assets = $10m total net worth. Their home represents 80% of their wealth. Household B: $8m home + $12m in other assets = $20m total net worth. Their home represents 40% of their wealth. From the street, you’re looking at two equally expensive houses. But one household’s wealth is overwhelmingly its home, while the other has a larger fortune outside it. My suspicion is that Household A might be more common among expensive-home owners than people assume. Perhaps they bought decades ago and stayed, or carried their equity through successive upgrades. They’ve ended up in a very valuable home without necessarily building an equally substantial portfolio outside it. But that’s a suspicion, not something I know. I’d be interested in: Your own situation: Roughly what is your primary home worth, how much equity do you have in it, and how much net wealth do you have elsewhere? Alternatively, what percentage of your overall wealth is your home equity? Broad ranges are absolutely fine. If you have secondary residences for personal use, how much do those add to the housing share? People whose finances you actually know: Among owners of homes in this price range, do you know many whose home is most of their fortune? Or do they generally have substantial investments, businesses or other wealth alongside it? Your neighbourhood: What’s your impression of the balance between those two groups among owners of similarly expensive homes? Please distinguish firsthand knowledge from an educated guess. Basically: when you look down a street of $8m homes, how often are you looking at people with an expensive house and a separate fortune, versus people whose house largely is their fortune?