The Real "Estate" Bubble
Many families treat their home as their estate. Slower population growth, higher rates, rising upkeep, cheaper building and changing work all point the other way. A look at why a home is shelter first, and a weak plan for wealth.
In 1989, the grounds of the Imperial Palace in Tokyo were said to be worth more than all the real estate in California.
Then Japan’s bubble burst. Land prices fell, and kept falling, for about 16 years. Meanwhile the population aged and stopped growing. By 2023, Japan had a record 9 million empty homes, about one in every seven.
Japan shows what housing can look like when the forces that lift it turn around. Many families today treat their home as their estate: the wealth they plan to retire on and pass on. We think that plan is getting harder.
The population tailwind is fading
Houses need households, and for decades a growing population supplied them. Much of that growth came from immigration.
Many countries are now choosing to slow it. Canada has cut its 2026 target for temporary residents by about a quarter. Australia aims to bring net migration down from about 292,000 a year to 245,000. The UK has proposed doubling the wait for permanent settlement from five years to ten. In France, weeks of unrest that began over school conditions have become part of the same wider debate.
In the US, net international migration halved in 2025 and is projected to fall by another three-quarters in 2026, according to Harvard’s Joint Center for Housing Studies. New households are forming at about half the recent pace:
Fewer new households means fewer new buyers and renters. Harvard JCHS.
Whatever one thinks of these policies, the arithmetic for housing is the same: fewer new arrivals means less new demand.
Houses need households. Households need people.
Higher rates look here to stay
In January 2021, a 30-year mortgage cost a record low of 2.65%. In October 2026 it costs 7.40%.
Principal and interest
The same loan costs about 72% more each month.
Rates rise and fall, but the forces behind the cheap money of the 2010s have weakened. The US government now owes about $40 trillion and pays about $1 trillion a year in interest, so it borrows heavily every year. The Federal Reserve still holds about $6.8 trillion of assets, but it is no longer buying long-term bonds to push rates down the way it did in the 2010s. Both keep pressure on long-term rates.
Cheap money built the last housing boom. It is not on the way back.
Fewer hands, higher bills
A home is not a one-time purchase. Taxes, insurance and repairs bill you every year, and two of those are rising.
Labor. About 26% of America’s construction workers were born abroad, a record. In some trades it is more than half: drywall installers (57%), plasterers (56%) and roofers (53%). With immigration slowing and enforcement stepped up, builders report fewer workers on job sites. An industry study already put the cost of the skilled-labor shortage at two extra months per build and about $10 billion a year. The same crews fix existing homes, so repair bills follow.
Insurance. In a 2026 survey, 71% of US homeowners said their insurance costs had gone up, as storms grow more costly and rebuilding gets more expensive.
A home is a subscription. The bill arrives every year, and it is going up.
A home is shelter, not a great investment
Even in the good years, homes have been a modest investment.
Since 1987, US home prices have grown only about 1.5 points a year faster than inflation, before paying for upkeep, insurance and property taxes. If those cost about 2% of the home’s value each year, the gain after inflation and costs is gone.
Buyers at the 2006 peak waited about ten years just to get back to their purchase price, and longer still after inflation. Since the 2022 peak, prices are up about 9.5% while prices in general are up about 12.7%, so in real terms homes have slipped.
That was with tailwinds: falling rates and a growing population. Both have turned.
The real return on a home is the rent you don’t pay. The price is a bonus, not a plan.
How much of a fall does it take?
Most homes are bought with borrowed money, and borrowing cuts both ways. The median first-time buyer puts down about 10%. Here is a $400,000 home bought that way:
- Today$40KHome $400K
- Prices −10%$0Home $360K
- Prices −20%−$40KHome $320K
- Like 2006–12 (−27%)−$68KHome $292K
A 10% fall erases the down payment. A 20% fall leaves the owner owing more than the home is worth.
A 20% fall is not an extreme case. From 2006 to 2012, US home prices fell about 27%.
With 10% down, a 10% dip erases the savings. A 20% dip leaves a debt.
When building gets cheaper
For decades, owners benefited from one more tailwind: building kept getting more expensive, so existing homes kept rising in price.
That may not last. Tesla aims to build about 1,000 Optimus humanoid robots a week by the end of 2026, and it is not the only company working on robots that can do physical work. If machines can one day frame walls, hang drywall and lay roofs, the cost of a new home could fall.
That would be very good news for buyers. For owners, it means the scarcity that pushed prices up could fade, and home prices could stop beating inflation by much at all.
When new homes get cheaper to build, old homes lose their scarcity premium.
Work moves, and debt follows
Where we work shapes where we live. About a quarter of US paid workdays are now worked from home, up from about 7% before the pandemic. AI could change how, and where, much more work gets done.
Office buildings show what happens to debt when work moves. In January 2026, the share of office loans in commercial mortgage bonds that were behind on payments hit a record 12.3%, above its high after the 2008 crisis.
Loans are priced on how a building is used. If AI changes where people work and how often they commute, homes in some commuter areas and city centers could be repriced, and the loans against them too.
Debt is priced on yesterday’s habits. When habits change, so does the debt.
Who backstops the backstop?
In 2008, the Federal Reserve was the backstop. It cut rates to near zero and bought trillions of dollars of bonds, including mortgage bonds. It started that crisis with about $0.9 trillion of assets.
The rescue of 2008 never fully unwound.
Today, the Fed still holds about $6.8 trillion. From 2022 to late 2025 it paid out more in interest than it earned, building up about $244 billion of losses it must earn back before it can send profits to the Treasury again. And the government it would be working alongside already owes about $40 trillion.
To be fair, the Fed cannot run out of dollars, and its losses do not stop it from acting. But a larger rescue would have a cost, most likely in higher inflation or higher rates: the same pressures already weighing on homeowners.
In 2008, the Fed rescued the market. Next time, the bill may arrive as inflation.
What we are watching
- Household formation staying near today’s slower pace.
- Mortgage rates holding above 7%.
- More homes for sale than buyers, for longer.
- Insurance and repair costs rising faster than incomes.
- Incomes rising faster than home prices.
- Building costs falling as new methods arrive.
- Rates easing without a jump in inflation.
The Kuberin view
A home is where you live. It is worth owning for the security and freedom it brings. But as the main plan for building wealth, it carries real weaknesses: it is a single asset, usually borrowed against, with costs that rise every year and a return that has barely beaten inflation.
The changes ahead (slower population growth, new ways of working, and machines that can build) are reshaping the economy. In our view, the strongest way to prepare for that change is to own a share of the businesses leading it, spread across several of them, rather than to rely on one leveraged house.
Build your estate in great businesses. Keep your real estate for living.
Calculation note. Mortgage payments use the standard formula for a fixed-rate loan: $360,000 over 360 months at 2.65% is about $1,451 a month, and at 7.40% about $2,493. Growth rates use the S&P Cotality Case-Shiller US National Home Price Index (63.7 in January 1987, 337.3 in July 2026: about 4.3% a year) and the US consumer price index (111.2 in January 1987, 336.9 in September 2026: about 2.8% a year). The July 2006 peak was 184.6; the index first got back above it in January 2017. From June 2022 to July 2026 the index rose about 9.5% and the price index about 12.7%. The equity example ignores selling costs and loan paydown, and treats the $360,000 loan as unchanged. The 2% yearly cost of upkeep, insurance and taxes is an illustration; real costs vary widely by home and place.
Disclaimer. Educational content only. Not investment, legal, tax, or financial advice. The analysis provided is for illustrative purposes and does not constitute a recommendation to buy or sell any specific security or property. Everyone’s housing and financial situation is different; consider speaking with a qualified adviser. All investments involve risk, including possible loss of principal.
Sources. Japanese asset price bubble (Wikipedia) · Japan’s vacant homes (Nippon.com) · Mortgage rates (Freddie Mac) · Mortgage rates average 7.40% (Freddie Mac) · State of the Nation’s Housing 2026 (Harvard JCHS) · Migration policy around the world (SBS News) · France’s student protests (CNN) · Immigrant workers in construction (NAHB) · Enforcement and job sites (NAHB) · Home insurance costs (Pew Research Center) · First-time buyers (National Association of Realtors) · Case-Shiller index (FRED) · Consumer price index (FRED) · Fed total assets (FRED) · Fed balance sheet developments (Federal Reserve) · Federal debt (US Treasury) · Working from home (WFH Research) · Office loan delinquencies (Connect CRE, citing Trepp) · Optimus production ramp (Yahoo Tech, citing The Information)