They Imported Millions. You Paid the Price.

1. The Chart That Explains Everything

There is one number that tells you almost everything you need to know about British housing since 1997. It is the ratio of new homes built each year to the number of people added to the population that same year.

In 1998, the ratio was almost 1.0: roughly one new home for every additional person. By the early 2000s it had fallen below 0.7. By 2010 it had collapsed to 0.4. Apart from a single freak year during the pandemic, when migration briefly went negative and the ratio spiked, the line has never recovered. In 2023 and 2024, Britain built fewer than one home for every two people added.

The headline finding is not complicated. Since 1997, the number of people living in the United Kingdom has grown by 11.1 million. Over the same 27 years, England added roughly 4.8 million net new dwellings. That works out at one new home for every 2.3 people added: almost exactly the average household size.

On paper, that sounds balanced. In practice, it is a catastrophe. Because "balanced" means no slack, no reduction in crowding, no rebuilding of the social housing lost under Right to Buy, no replacement of the unfit stock taken out of use, and, crucially, no regional matching.

2. A Home in Darlington Doesn't House a Renter in Hackney

This is the detail that most of the "we just need to build more homes" debate quietly ignores. The population growth of the last 27 years did not land evenly across the country. It landed in London, the South East, and a handful of large regional cities: Manchester, Bristol, Birmingham, Cambridge, Oxford, Reading. That is where the jobs were, where the universities were, and where the visa routes pointed. The ONS travel-to-work data is unambiguous: on every measure of where new arrivals settled, the distribution is heavily weighted to roughly a dozen high-demand travel-to-work zones.

The homes did not follow. They could not. In the places where demand landed, land is expensive, planning is adversarial, and the supply chain is clogged with objections, judicial reviews and local politics. In the places where demand did not land, land is cheap, planning is easier, and the big housebuilders will cheerfully put up a 400-plot estate on the edge of Darlington, Doncaster or Derby because the margins work. Both things happened at once. The result is the statistical illusion at the heart of British housing policy: completions that look adequate on a national spreadsheet and a housing market that functions as if no new homes were built at all.

A new three-bed semi in Darlington does not lower rents in Hackney. It does not lower rents in Reading. It does not even lower rents in Newcastle. The housing market is not one market; it is dozens of local markets defined by commuting patterns, labour markets and schools. Supply that lands outside a working-age person's travel-to-work area is, for the problem we are actually trying to solve, no supply at all. It shows up in the national totals. It does nothing for the thing the national totals are supposed to measure.

This is why the chart at the top of this piece understates the problem. It treats "homes built anywhere in England" as an offset to "population added anywhere in the UK." If you redrew the chart for London and the South East alone (where roughly half of all net migration has settled) the 0.5 national ratio of the last decade would collapse to something closer to 0.25. One home in the right place, for every four people who need one there. That is where the real squeeze lives. The cheap completions out in the former coalfields mask it in the spreadsheets but change nothing on the ground.

3. The Scale of What Was Imported

To understand why this happened, you have to look at the demand side first. And on the demand side, one number swamps everything else.

Between 1997 and 2024, net international migration to the UK totalled approximately 6.5 million people. Natural change (births minus deaths) accounted for the rest of the 11.1 million increase, and that component is now collapsing toward zero. In the year to mid-2024, the ONS reported that net migration accounted for 97.6% of all UK population growth. Natural change contributed 30,000 people. Net migration contributed 690,100.

These are not fringe numbers. They are the official ONS mid-year estimates. The UK has absorbed, in 27 years, the entire population of Scotland, and then absorbed it again. Most of it came in through three policy decisions taken in Whitehall, none of which were put to the electorate:

Each of these decisions was, on its own terms, defensible. Each was also taken without any corresponding plan for how the country would house the people arriving under it. The Treasury modelled the fiscal upside. Nobody modelled the land.

4. No Country Could Have Built That Fast

Here is the honest bit. Let us assume, for a moment, that the British planning system worked perfectly. Assume the land was released. Assume Barratt and Persimmon tripled in size overnight. Assume the bricks arrived. Could Britain have built the homes to match the demand it imported?

The answer is no. Even the all-time high in English housebuilding since the mid-1970s was 248,590 net additional dwellings, reached in 2019–20 under conditions of maximum political pressure, maximum borrowing capacity, and a fully-employed construction sector. That was the ceiling. And in the year to mid-2023, net migration alone was 745,000: almost exactly three times what the whole country could physically deliver even at its recent peak. One single year of arrivals outran three years of maximum-effort housebuilding.

To meet imported demand at the 2022–23 pace, the UK would have needed to build around 300,000 homes a year just for the new arrivals, before a single existing resident moved, formed a household, got divorced or needed somewhere to live. The Resolution Foundation's target of 300,000 homes a year to stabilise stock per capita would have had to become ~500,000, indefinitely, simply to tread water.

For context, the last time Britain built 500,000 homes in a year was never. It has not happened. It has never come close. The 1968 post-war record, often cited by politicians, was 425,000: in a country of 54 million people, with nationalised construction, rationed materials, and council-built tower blocks going up on bombsites. That is the ceiling the system could hit when a government was willing to do whatever it took. It is still nowhere near what the migration numbers of 2022–24 would have required.

The editorial claim underpinning this whole piece therefore stands as an arithmetic fact. No country in Europe could have outbuilt the demand the UK imported after 2021. Germany, the Netherlands, Ireland: all of them face housing crises at roughly half the per-capita migration rate. The UK did not just set itself a hard problem. It set itself an impossible one.

5. The Counterfactual: Two Markets, Two Answers

Which brings us to the question readers always ask next. How much cheaper would housing have been if the country had imported less of the demand?

Because a national average is the wrong unit of analysis (as the Darlington point above hopefully made clear) the widget below is split in two. One side shows London and the South East, where roughly half of all international net migration settled and where supply is pinned by Green Belt, planning and land cost. The other side shows the rest of the UK, where population growth has been more evenly shared between migration, natural change and internal flows, and where supply has been closer to absorbing it. The two markets react very differently to the same slider.

Both calculations use the Migration Advisory Committee's central finding that a 1% population rise from migration produces roughly a 1% local house price rise, scaled by a supply-elasticity multiplier because UK supply is less than half as responsive as comparable economies. The difference between the two widgets is where the migration landed, not how the maths works.

The figures will disappoint people expecting the crisis to vanish. Even halving migration over 27 years does not return Britain to a 1997 housing market, because the supply side (the planning system, the builder oligopoly, the banking rules) is the other half of the story. A country with less demand still cannot build fast if the people who control land and credit are structurally incentivised to keep supply scarce.

Which is the second question this article has to answer.

6. Who Benefits From the Homes That Were Never Built

If the imported demand was a policy failure, the undersupply was a business model. Two sectors have quietly run the British housing shortage as a commercial operation for the past 25 years. They do not have to coordinate. The system rewards them both for keeping the squeeze on.

The Housebuilder Oligopoly

Between them, the top five listed housebuilders (Vistry, Barratt Redrow, Persimmon, Taylor Wimpey and Bellway) control between 55% and 60% of the new-build market in England. The next five take most of the rest. The "market" for new homes in the UK, the thing competition is supposed to deliver, is a club of fewer than a dozen companies.

These companies do not actually want Britain to build 300,000 homes a year. They are publicly listed. Their share prices are driven by margin per plot, not volume. Industry analysts have shown that the combined output of the top ten has barely moved in a decade, even as their land banks have grown and house prices have doubled. In 2024, their revenues fell 10% year-on-year, yet their margins held, because they controlled release. That is not a sign of a competitive industry. That is a sign of price discipline.

Five years of output sitting as land on the balance sheet. In any other industry that would be called hoarding. In housebuilding it is called "strategic land pipeline management" and it is rewarded by the market.

The reason this is allowed is the planning system. British planning consent is scarce, slow and local. Once a housebuilder secures it, they have what is effectively a monopoly on the supply of new homes in that location, and a financial incentive to drip-feed completions to protect sale prices. The system does not just fail to build fast. It is structurally designed to punish anyone who tries.

The Banks' Quieter Win

The second beneficiary is the one most people miss, because it doesn't build anything. It lends.

The UK's outstanding mortgage stock stood at £1.73 trillion by the end of 2025. That is up from roughly £500 billion in 1997, in nominal terms. Even adjusting for inflation, the real mortgage burden of British households has almost doubled. Not because more people own homes; the ownership rate has actually fallen, from its 2003 peak of 70.9% to 63.0% today, even as prices doubled. Each home simply requires a much larger mortgage relative to income than it used to, carried by a smaller share of the population, over a longer term, later in life. The average age of a first-time buyer has risen from 29 in 1997 to 33 in 2024. Four years of adult life, extracted. Not gone on holidays. Gone on rent, while saving for the deposit the system requires before it will let you stop paying rent.

In 1997, a typical first-time buyer took a mortgage of roughly 2.8 times their income. By 2024, 45.8% of all new lending was at more than 4.5 times income. That is not a story about people being reckless; it is the only way the arithmetic works. When house prices rise relative to wages, which is exactly what a chronic supply shortage produces, the size of the loan required to buy a given home rises proportionally. The higher the multiple, the more interest the bank collects over the life of the loan. The longer the term, the more again.

Put it in pounds. A £150,000 mortgage at 4.5% over 25 years generates roughly £100,000 in interest over its life. The same purchase, financed by a £290,000 mortgage at the same rate over 35 years (which is increasingly common for under-35s) generates roughly £283,000 in interest. For one house. The bank's revenue from the same transaction has nearly trebled. The borrower's take-home pay has barely moved.

This is the quiet half of the story. Housebuilders have captured the supply side. Lenders have captured the demand side. And because their interests both depend on scarcity, there is no political constituency inside the system that benefits from actually solving the problem. The incumbent homeowners, meanwhile, the people with their mortgages paid off, sitting on a tax-free capital gain, are not the villains of the piece. They are the hostages. Everything they own is tied up in the same broken asset class as everyone else's.

7. The Policy Regime Since 1997

It would be easy to point at 2021 and blame Boris Johnson's visa regime. It would be easy to point at 2004 and blame Tony Blair for opening the labour market. It would be easy to point at the planning system and blame 1947. None of these individual answers is wrong. But the reason British housing is where it is today is that three separate policy failures lined up, and no government of either party has tried to fix more than one of them at a time.

Since 1997, every government has been willing to import demand. No government has been willing to reform supply. Labour and Conservative administrations alike kept the Green Belt, kept the planning system, kept the land-banking model, kept Help to Buy (which subsidised housebuilder margins, not housebuilders' volumes), and kept Right to Buy draining the social stock. Between 1997 and 2024, the UK lost a net ~400,000 social housing units to Right to Buy after replacements: a replacement rate of roughly one-in-ten. Every one of those lost council tenancies became private-rental demand by default, pushing structural pressure onto the private rented sector even in a world with no migration at all. The only thing that changed was how loudly each government promised to "build more homes" at general elections. Target figures were published. They were never met. Not once since 2004 has the UK hit its own stated housebuilding target.

The effect of stacking imported demand on top of frozen supply is not a crisis. It is an outcome. It is what the policy was always going to produce. If you are young, in private rent, handing 40% of your take-home pay to a landlord who has a mortgage with a bank that holds the note on a house built by one of five companies: you are not unlucky. You are standing exactly where the system was designed to put you.

8. What This Piece Is Not Saying

The maths does not care who is in government. The maths does not care which party's manifesto is running. The maths says that if you want to run net migration at 500,000 a year, you have to build somewhere for 500,000 a year to live. If you want to build 200,000 homes a year, you have to run migration at a level where 200,000 homes can absorb it. And you probably should have asked the electorate first.