If your equity actually turned into cash tomorrow, you would probably do what almost everyone does. You would buy a slightly shinier version of the life you already have. Same city. Same postcode. Just with nicer taps and a marginally better coffee shop on the corner.
From a distance, that feels rational. Your job is here. Your friends are here. Your favourite sourdough is here. Why not double down on the one place you know?
The concentration nobody prices
The problem is that your risk is here too. Your employer, your stock, your salary, your network, all priced off one city and one story continuing happily forever. Buying a bigger home in the same place is diversifying your portfolio by buying more shares in the same company because they have gone up.
Real diversification almost never looks like a bigger place round the corner.
Families think in airports, not postcodes
The families who have been wealthy for more than one generation do something very different. They do not begin with which flat they can afford near the office. They begin with which three or four cities they actually want their life exposed to over the next twenty to thirty years. They think in airports, not postcodes. Where will the children study? Where might the next business be based? Where are the courts boringly predictable and the politics boringly dull, in the best possible sense? In that world, the dream home stops being the end of the story and becomes one chess piece on the board. Emotionally important, but judged ruthlessly alongside other assets, other jurisdictions and at least one full property cycle.
Where London actually fits
For most of the founders and family principals I work with, London is almost always one of those three cities. It earns the place for unglamorous reasons: predictable courts, deep liquidity, and demand that survives a full cycle. The mistake is treating London as the city you happen to live in, rather than a deliberate decision about where a chunk of your capital should quietly sit for the next couple of decades. This is also why a London position rarely stands alone. For an international buyer it sits next to other markets, other currencies and other timelines. The point is not breadth for its own sake. It is reading one city properly, and placing it on purpose.
The question to ask yourself
So if your income, your equity and your network are already concentrated in a single city, the move is not a bigger place near the office. It is deciding which other cities you want on your personal risk map, and when to invite them onto the balance sheet.
The real question is not whether to buy in London. It is whether London is simply where you are, or where your money should be.
And if you had to choose only three cities that will really matter for your life and your wealth over the next twenty years, which ones would you put on the board, and which would you sacrifice first if you had to?
Frequently asked questions
What does thinking in three cities mean for property investment?
It means treating a home as one position on a global risk map rather than an upgrade of the life you already have. Instead of asking which flat you can afford near the office, you decide which three or four cities should matter for your family and your capital over the next twenty to thirty years, and when to bring each one onto the balance sheet.
Why is concentrating your wealth in one city risky?
Because your income, your equity, your network and your home all end up priced off the same city and the same story continuing forever. Buying a larger property in the same place adds more of the same risk. Real diversification means owning a different market, not a bigger version of the one you already depend on.
Where does London fit for international investors?
For most globally mobile families, London is one of the three or four cities worth holding for the long term, valued for predictable courts, deep liquidity and durable demand. The mistake is treating it as the place you happen to live rather than a deliberate decision about where part of your capital should sit for the next couple of decades.
Is buying prime London property only for the ultra-wealthy?
No. The principle is deliberate allocation, not budget. Anyone whose income and assets are concentrated in a single city can ask the same question a family office asks: how much of my future do I want priced in one market, and how much in another.