Property performance at this level is almost always quoted gross — the price it sold for against the price it was bought for. That figure omits every year of holding cost in between, and the omission is not small.
The three subtractions
Annual carrying cost, compounding across the hold period. A property held a decade carries ten years of it, and on a large estate that total can consume a substantial share of nominal appreciation.
Transaction friction at both ends. Purchase taxes and duties, legal and agency fees, and — at the trophy end — long marketing periods during which the property continues to cost money. Both entry and exit are expensive and the exit is slow.
Illiquidity. The market for very large properties is thin. Price is not what an index says; it is what the small number of qualified buyers will pay in the window when you need to sell.
Why the marketed figure survives anyway
Because the comparison is usually made against the wrong benchmark. A property that appreciates over a decade looks like a success in isolation. Against a liquid alternative over the same period, net of everything above, the picture is frequently less flattering.
This is not an argument against owning trophy property. It is an argument for being honest about which purchase it is: a consumption decision about how you want to live, or an investment decision that must clear a return hurdle. Most trophy purchases are the first wearing the language of the second.
The version that does work
Where the numbers hold up, it is usually because of one of three things: the property is genuinely scarce in a market with persistent demand, it is used enough that the carrying cost buys real utility, or it forms part of a broader structure with reasons beyond appreciation.
How to model it honestly
The correction is not complicated. It is simply that almost nobody does it, because the uncorrected version is more pleasant.
Start from total cost, not purchase price. Purchase price plus entry taxes and duties plus legal, agency and survey fees plus any structuring cost. That is what the position actually cost you on day one.
Add every year of carrying cost. Not an estimate of the obvious lines but the full figure built the way our Part 1 guide sets out, including the replacement reserve that most owners never accrue.
Subtract the costs of exit. Agency, legal, any exit taxes, and the carrying cost incurred during a marketing period that at this end of the market can run for years rather than months.
Then compare against a hurdle, not against zero. The question is never "did it go up". It is "did it beat what the same capital would have done elsewhere, after everything, over the same period, adjusted for the risk and the illiquidity". A property that appreciated while underperforming a liquid alternative has still lost you money in the only sense that matters.
Finally, adjust for inflation. A nominal gain across a decade of meaningful inflation may be a real loss. Property is quoted nominally almost universally, which flatters long holds systematically.
A worked example, with invented numbers
Every figure below is invented. They are not real prices, real costs or real returns for any market. They exist to show the arithmetic, and the arithmetic is the point.
Buy at 10,000,000. Entry costs at 6% add 600,000, so the position costs 10,600,000.
Hold for ten years. Assume carrying cost of 2% of value a year, and call it a flat 200,000 for simplicity: 2,000,000 over the decade.
Sell at 14,000,000 — a headline gain of 40%, which is the number that would be quoted. Exit costs at 3% take 420,000, and an eighteen-month marketing period adds another 300,000 of carrying cost.
Net proceeds: 13,280,000. Total outlay: 10,600,000 plus 2,300,000 of carry, or 12,900,000. The net gain is 380,000 on a position of 12,900,000 over ten years — under 3% in total, not 40%.
Now the honest counterweight. If you used the property for eight weeks a year and the equivalent rental would have cost 150,000 a year, you also consumed 1,500,000 of housing over the decade. Counted properly, the position looks very different — and that is exactly the correction the next section is about.
The imputed rent argument, which is the strongest case for
The fair objection to everything above is that it treats a home as though it produced nothing. It does produce something: you lived in it.
Economists call this imputed rent — the value of the housing services you consumed by occupying a property you own rather than renting an equivalent. It is real, it is often large, and leaving it out of the calculation understates ownership just as badly as leaving out carrying cost overstates it.
The discipline is to count it honestly rather than generously. Value it at what you would actually have paid for an equivalent property for the weeks you actually used it — not at what the property could theoretically let for over a full year you would never have booked.
Done that way, a heavily used property frequently justifies itself and a lightly used one frequently does not. Which is the same conclusion the staffing and systems piece reaches from the cost side, arrived at from the benefit side.
Currency, the subtraction nobody models
Where a property sits in one currency and your wealth is measured in another, you hold two positions: a property position and a currency position. Most owners model only the first.
The effect works in both directions and it is not small over a decade. A property that rose in local terms can be flat or down in your home currency, and the carrying cost you paid every year was paid at whatever rate applied that year rather than at the rate on the day you bought.
If the currency exposure is unintended, it is worth naming it as a separate decision rather than accepting it as a side effect of liking a house.
Leverage cuts both ways
Debt magnifies the outcome in both directions, and at this end of the market that deserves more caution than it usually gets.
On the way up, borrowing improves the return on the equity actually committed. On the way down, or in a flat market where carrying cost accumulates, it does the reverse — and it does so against an asset that cannot be sold quickly. The combination of high fixed carrying cost, thin liquidity and debt service is the specific mechanism behind most distressed trophy sales, and distressed sales are where the losses actually happen rather than in the index.
The mitigation is not to avoid debt but to stress-test it against the bad year: a repair, a soft market, a currency move and a change in income arriving together.
What to ask before you call it an investment
- What is the total entry cost, including taxes, duties and fees, as a percentage of price?
- What is the modelled annual carrying cost, including a replacement reserve?
- What is the realistic marketing period for a property like this in this market?
- What are the exit costs, including any tax on gain in the country where the property sits?
- What return would the same capital need to make elsewhere to beat this, after everything?
- In which currency is the exposure, and is that exposure intended?
- How much imputed rent will you genuinely consume, valued at the weeks you will actually use?
- What happens to the position if you need to sell in a year when nobody is buying?
For the market-selection side of that, see ultra-prime cities with the fastest appreciation, and for the financing and structuring side, private banking for real estate investors.
This is general commentary on how holding costs affect outcomes, not investment or tax advice — positions differ by jurisdiction and by structure.
Back to Part 1. If you are weighing a property against other places to hold value, our wealth and investment section covers tangible assets and preservation.
