Houses are expensive for two reasons stacked on top of each other, and most of the public argument is about the smaller one. The smaller reason is supply. Britain doesn’t build enough homes where people want to live, and that matters at the margin. The bigger reason is the money. The pound is built to lose value, and the system that creates new pounds channels them into property through mortgage lending. So a house stopped being just shelter a long time ago. It became one of the main places this country stores its savings. When you bid on a house, you’re bidding against people who need a home. You’re also bidding against everyone trying to protect the value of work they’ve already done, using borrowed money, in a unit that loses value.
Two opposite directions
Housing is where the whole thesis becomes something you can feel. Your phone replaced a camera, a map, a stereo, and a filing cabinet, and now does all of it for close to nothing. A television costs less every year and gets better. That’s the natural direction of a free market, because as tools improve, the same goods take fewer inputs to make, and competition passes the saving on as lower prices. Houses went the other way. Same economy, same decades, two opposite directions. That gap is the tell that something other than bricks and land is setting the price.
How the money reaches the house
1.Money is loaned into existence
Most new money is created through lending. When a bank approves your mortgage, it creates a new deposit in your account, and that deposit is new money. No box of other people’s savings gets handed over. So the money supply grows mainly by creating debt, and for ordinary people the single biggest channel is the mortgage.
2.Debt needs rising prices
A system built on debt can’t tolerate falling prices. Debts are fixed in pounds. If prices and wages broadly fell, your mortgage payment wouldn’t fall with them, so the debt would take a bigger bite of everyone’s income, and defaults would cascade through the banks. So policy targets rising prices of about 2% a year, forever. And because technology keeps pushing prices down, hitting that target takes continuous, growing expansion of money and credit. In the two decades before the pandemic, the world added roughly 185 trillion dollars of new debt to buy about 46 trillion dollars of growth. The scale of the effort tells you how strong the underlying force is.
3.The new money reaches assets first
New money doesn’t land evenly. It enters through lending and financial markets, so it reaches assets before it reaches wages. Cheaper borrowing lets buyers bid more for the same house. The higher price becomes higher collateral [what the bank can take if the loan goes bad], so banks lend more against it. Your pay moves slowly by comparison, because wages are renegotiated once a year while assets are repriced every day. Asset owners run ahead, wage earners fall behind, and the first rung moves further out of reach each time round.
4.The house takes money’s job
Because cash loses value year after year, money fails at one of its basic jobs, storing the work you’ve already done. People need somewhere to put that stored work, so the house takes the job. Demand for housing is two demands added together, one for shelter and one for a savings vehicle. That second demand is large, it’s fed by policy, and it has nothing to do with the cost of building a house. That extra has a name, a monetary premium [the extra price an asset carries because people use it to store savings, on top of what it’s worth to use].
Put those four together and the picture flips. The money lost value, and houses were the sponge that soaked up the difference. You saved for years toward a house deposit, and then a round of money creation pushed prices further away from you. The house didn’t get better. Your stored time shrank.
The same house, measured in bitcoin
Measure the same house in a money nobody can create more of, and the trend reverses. A house that rose from 1.4 million to 2.1 million measured in dollars fell from roughly 300 bitcoin to roughly 40 bitcoin over the same few years. Nothing about the mechanism changes in pounds. Any single example is noisy, and this isn’t a suggestion about what to buy, only a measurement. The whole of that fall is bitcoin strengthening as more people move their stored work into it. The house rose in dollars over those years. Bitcoin rose far more. So what you’re watching is a money that can finally hold savings taking the job on. The house letting go of it comes later.
Why the fixes keep disappointing
Blaming landlords or boomers goes nowhere, because there’s no villain here, only buyers, landlords, and banks all doing what a leaking money pays them to do. Change the incentive and the behaviour changes.
The leak also explains why the fixes keep disappointing. Schemes that top up a buyer’s deposit hand them more purchasing power, and prices absorb it, because what holds buyers back is the bidding war with stored savings and cheap credit. Rent caps and stamp duty tweaks fight symptoms while the money keeps flowing in. And the whole structure is now hostage to policy, because prices this far ahead of what people earn only hold while borrowing stays supported. A young couple who stretch to buy carry that policy risk personally.
For owners, the paper gain is mostly illusion unless you sell down the ladder or leave, because you still need an equally inflated house to live in, and the council tax, insurance, and upkeep climb too. Most of the “wealth” is a transfer from those who don’t own to those who do, not new value created.
The replies I hear most
“It’s just supply. Fix planning and this goes away.”
Supply is real, and I’d never argue against building. But if scarcity were the whole story, prices would grind up slowly with population. Instead they jump in waves, and the waves line up with how easy it was to borrow, not with sudden changes in land. After the money expansion of 2020 and 2021, house prices and rents jumped across many countries at once, with wildly different planning regimes. Land didn’t get scarcer everywhere in twelve months. The money got bigger everywhere at once.
“Cheap mortgages are what make ownership possible.”
Backwards, I think. Cheap credit is why the price is high in the first place. Prices absorbed the falls in rates, so the affordability never arrived, only bigger debt did. Mortgages at this scale exist because money fails at saving. With money that held its value, saving toward a house would actually work, and a starter home would be something you buy from savings rather than a twenty-five-year liability.
“Falling house prices would be a catastrophe.”
Falling prices from productivity are the natural state, and they’re how living standards rise. What can’t survive falling prices is a system loaded with debt. That’s an argument about the design of the debt, not about what’s good for you. And the system admits as much, quietly. It must keep house prices rising because the alternative is its own insolvency, and rising prices serve that solvency rather than the people paying them.
Bricks didn’t get harder to make. Pounds got easier to make. Housing is doing a job money should do, storing value, and it charges the whole country rent for that service. Money that holds its value takes the savings job back, and a house drifts toward what it’s worth as a place to live. Measured in the hardest money we have, the savings job has already started to move.