Housing Bubble 2026: UBS Ranks Zurich & Tokyo High Risk — Dubai, London, New York Compared

 

Housing Bubble Risk 2026: Zurich and Tokyo Are High Risk — Where Dubai, London and New York Stand

Global Real Estate | October 12, 2026

Are the world's biggest property markets heading for another housing crash?

The latest UBS Global Real Estate Bubble Index 2026 gives a more nuanced answer.

Among the 23 major cities studied, only Zurich and Tokyo are currently classified by UBS as having a high housing-bubble risk. Zurich leads the index with a score of 1.69, followed by Tokyo at 1.54. Miami, which had topped the index in the previous two editions, has fallen into the lower elevated-risk category.

Several other closely watched markets—including Dubai, Seoul, Geneva and Lisbon—also sit in the elevated-risk group.

At the other end of the spectrum, UBS classifies London, Paris, New York, San Francisco and São Paulo as low risk.

That does not mean homes in London or New York are cheap.

It also does not mean Zurich or Tokyo is guaranteed to crash.

The index measures the extent to which property prices appear stretched relative to factors such as rents, incomes, financing conditions and historical market trends.

And this year's findings reveal something more interesting than a simple ranking:

some of the world's most expensive cities now have relatively low bubble risk because prices have already corrected, while several markets that continue to attract strong international demand are becoming increasingly stretched.

For buyers, homeowners and real-estate investors, that distinction matters.

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UBS Global Real Estate Bubble Index 2026: City Rankings

Here is the 2026 picture based on the UBS index.

City	2026 UBS score	Risk category
Zurich	1.69	High
Tokyo	1.54	High
Miami	1.41	Elevated
Dubai	1.16	Elevated
Seoul	1.13	Elevated
Geneva	1.12	Elevated
Lisbon	1.04	Elevated
Amsterdam	0.95	Moderate
Madrid	0.86	Moderate
Los Angeles	0.69	Moderate
Sydney	0.68	Moderate
Frankfurt	0.64	Moderate
Toronto	0.63	Moderate
Vancouver	0.62	Moderate
Munich	0.61	Moderate
Hong Kong	0.61	Moderate
Singapore	0.54	Moderate
Milan	0.50	Moderate
Paris	0.33	Low
London	0.32	Low
New York	0.28	Low
San Francisco	-0.02	Low
São Paulo	-0.24	Low

UBS's published categories place scores above 1.5 in the high-risk range, 1.0–1.5 in elevated risk, 0.5–1.0 in moderate risk and below 0.5 in low risk.

The index covers 23 cities this year, with Lisbon and Seoul added to the study for the first time.

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What Does “Housing Bubble Risk” Actually Mean?

This is the most important point in the entire report.

A high UBS bubble-risk score does not mean:

“This city will crash next year.”

A real-estate bubble generally develops when property prices move increasingly out of line with economic fundamentals.

Those fundamentals can include:

• household incomes;

• rents;

• mortgage conditions;

• construction activity;

• price growth;

• credit expansion.

If home prices rise much faster than incomes and rents for a long period, buying can become increasingly dependent on the expectation that someone else will later pay an even higher price.

That is one characteristic associated with bubble conditions.

But bubbles can unwind in different ways.

Prices can:

• fall sharply;

• stagnate for years;

• grow more slowly while incomes catch up;

• decline in inflation-adjusted terms without collapsing nominally.

So investors should treat the index as a risk indicator, not a crash timer.

---

Zurich Has the World's Highest Bubble Risk in 2026

Zurich has moved to the top of the UBS index with a score of 1.69, up from around 1.55 a year earlier.

Why?

UBS points to an unusually tight housing market.

Owner-occupied housing supply remains scarce, while Zurich continues attracting highly paid international workers, particularly in technology and artificial intelligence.

At the same time, prices have moved significantly ahead of both rents and household incomes.

Over the last two decades, Zurich experienced the strongest house-price growth among the cities covered in the study.

The concern is not that people suddenly stopped wanting to live in Zurich.

The concern is valuation.

When property becomes very expensive relative to the economic benefit of owning it, the market can become increasingly sensitive to borrowing costs.

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Why Higher Interest Rates Matter So Much in Zurich

One of the factors supporting expensive housing is cheap financing.

If borrowing costs remain low, buyers can tolerate higher prices.

But as financing costs rise, the same property becomes much more expensive to own each month.

UBS says Zurich's high and rising price-to-rent ratio makes the market particularly dependent on favourable financing conditions.

That does not guarantee falling prices.

It does mean that further increases in mortgage costs could test how much buyers are willing or able to pay.

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Tokyo Is the Second-Highest-Risk Housing Market

Tokyo scores 1.54, just above UBS's high-risk threshold.

The city's property market has experienced a prolonged period in which house-price growth has significantly outpaced income growth.

Several factors continue supporting demand:

• rising household purchasing power;

• international migration;

• foreign buyers;

• strong interest in prime apartments.

But affordability is becoming increasingly stretched.

UBS says higher housing costs are already pushing some demand away from central ownership toward:

• suburban areas;

• rental housing.

If Japanese financing costs continue rising, buying could become less attractive relative to renting, increasing the possibility of a market correction.

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Does Tokyo's High Bubble Risk Mean Foreign Buyers Should Avoid Japan?

No.

That conclusion would be too broad.

The index evaluates Tokyo as a city-level housing market.

It does not say:

• every Tokyo apartment is overpriced;

• every neighbourhood carries equal risk;

• Japanese real estate will fall;

• foreign investors should not buy.

A well-priced property with strong rental demand can have a very different investment profile from an ultra-premium new condominium whose value depends heavily on continued capital appreciation.

For buyers, the practical question is not:

“Is Tokyo in a bubble?”

It is:

“Does the price of this specific property make sense relative to rent, financing cost, taxes and my investment horizon?”

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Miami Drops Out of the High-Risk Category

One of the biggest changes in this year's index is Miami.

Miami ranked highest in the previous two UBS editions.

In 2026, its score fell to 1.41, moving it from high risk to elevated risk.

The market's extraordinary price boom appears to be losing momentum.

UBS points to:

• stretched affordability;

• persistently expensive borrowing;

• softer demand;

• high homeownership costs;

• rising insurance premiums.

Real house prices have begun declining, although that refers to inflation-adjusted values rather than necessarily a dramatic fall in nominal selling prices.

This is an important lesson about how bubble risks can decline.

A market does not need to crash overnight.

Risk can ease because prices stop rising while inflation and incomes slowly improve relative valuations.

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Dubai Remains Elevated — But the Story Is More Complicated

Dubai scores 1.16, placing it in the elevated-risk category.

Bubble risk has increased compared with last year, although UBS says it has eased somewhat since March.

That sounds worrying.

Yet Dubai remains one of the unusual markets in the index where UBS says homeownership is still comparatively attractive.

According to reporting based on the UBS study, purchasing a 60-square-metre apartment in Dubai requires roughly five years of a skilled worker's income, making it relatively accessible compared with many other cities in the study.

So how can Dubai simultaneously have elevated bubble risk and comparatively attractive ownership economics?

Because they measure different things.

Dubai has experienced substantial price increases from a relatively lower starting point.

A market can therefore become increasingly stretched while remaining cheaper than Zurich, London or Hong Kong on certain affordability metrics.

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Dubai Property Prices Are Showing Signs of Slower Momentum

UBS data cited by The National showed Dubai's inflation-adjusted home prices rising only about 0.4% year-on-year in Q2 2026, while real rents declined roughly 4%.

That suggests a market moving from rapid expansion toward a more mature stage of the cycle.

For investors, that makes rental income increasingly important.

Buying simply because:

“Dubai property always goes up”

is not a sufficient investment strategy.

Future returns depend on:

• entry price;

• location;

• service charges;

• rental yield;

• new supply;

• financing;

• resale liquidity.

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Seoul Enters the Index Already at Elevated Risk

Seoul is one of two new cities added to the 2026 UBS study.

It enters with a score of 1.13, putting it directly into the elevated-risk category.

UBS says Seoul, together with Lisbon, recorded the largest increase in housing-market imbalances this year.

Seoul also belongs to a group of cities—including Lisbon, Madrid and Hong Kong—where inflation-adjusted house prices rose by around 10% over the latest year.

That pace of growth can quickly create affordability problems if household income does not rise at a similar rate.

---

Lisbon's Decade-Long Housing Boom Is Becoming a Risk Issue

Lisbon also enters the index in the elevated category, with a score of approximately 1.04.

UBS says real house prices in Lisbon rose by close to 7% per year over the past decade, the fastest long-term growth among the cities studied.

Prices then gained another roughly 10% since mid-2025.

Foreign capital and policies designed to attract international residents helped support demand.

But those same trends contributed to worsening affordability for many local households.

Lisbon is therefore a good example of how successful internationalisation can create a housing-policy challenge when supply fails to respond quickly enough.

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London Is Expensive — So Why Is Its Bubble Risk Low?

This is perhaps the most counterintuitive result in the report.

London scores only around 0.32, placing it in the low-risk category.

Does that mean London housing is affordable?

Absolutely not.

UBS says inflation-adjusted London home prices are now more than 15% below their 2021 level after five consecutive years of weak market performance.

That correction has reduced the imbalance captured by the bubble index.

At the same time, rents remain close to record highs because:

• housing supply is constrained;

• construction remains weak;

• rental demand is strong.

So London can simultaneously have:

low bubble risk

and

severe housing affordability problems.

Those are different concepts.

---

New York Also Sits in the Low-Risk Category

New York's UBS score is approximately 0.28, placing it firmly in the low-risk group.

Again, that does not mean Manhattan apartments are cheap.

It means prices are not showing the same type of bubble imbalance measured in Zurich or Tokyo.

Higher U.S. financing costs have already cooled housing demand across many markets.

UBS says bubble risks broadly declined across North American cities because expensive borrowing reduced affordability and constrained demand.

Ironically, higher mortgage rates can therefore reduce bubble risk even while making houses harder to afford.

---

San Francisco Has an Even Lower Score

San Francisco scores slightly below zero at approximately -0.02.

The city is therefore deep inside UBS's low-risk category.

Years of weak price performance following the pandemic-era restructuring of office work have reduced previous housing-market imbalances.

But investors should again avoid reading:

low bubble risk = high investment return.

A low-risk score tells you something about valuation imbalance.

It does not guarantee:

• appreciation;

• strong rental returns;

• population growth;

• future demand.

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Toronto and Vancouver Tell an Important Story

Canadian buyers may find this year's results especially interesting.

Toronto and Vancouver are both now classified as only moderate risk, scoring approximately 0.63 and 0.62 respectively.

That would have looked surprising several years ago when both cities were frequently associated with extreme housing valuations.

The reason is correction.

UBS says inflation-adjusted home prices have fallen by roughly 10% over the latest year in both Vancouver and Toronto.

Declining prices reduce bubble imbalances.

But they do not necessarily restore affordability immediately because mortgage borrowing can remain expensive.

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Housing Markets That Look Riskier Than a Year Ago

According to UBS, risk increased particularly strongly in:

• Lisbon;

• Seoul.

Imbalances also intensified in:

• Milan;

• Hong Kong;

• Madrid;

• Dubai.

This does not mean these cities are moving toward identical outcomes.

Their housing systems differ substantially.

Madrid's supply constraints are different from Dubai's rapid development cycle.

Hong Kong's financing and land market differs from Lisbon's tourism and foreign-demand dynamics.

The index is therefore most useful as a starting point for deeper local analysis.

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Markets Where Bubble Risk Is Easing

UBS reports declining risk in:

• Tokyo;

• Sydney;

• Miami;

• Toronto;

• Vancouver;

• several other North American markets.

Frankfurt and Amsterdam recorded particularly large declines in their European risk scores.

Again, falling bubble risk is not necessarily good news.

It can occur because home prices decline.

For an owner who purchased at the peak, that adjustment may be painful.

For a new buyer, it can improve valuation.

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Homeownership Is Consuming More Than 40% of Skilled Income in Many Cities

One of the most useful findings in the UBS report has nothing to do with the league table.

UBS estimates that in most of the cities studied, the annual cost of owning a newly purchased 60-square-metre—or roughly 650-square-foot—home, including mortgage interest and maintenance, now exceeds 40% of a highly skilled worker's gross income.

That demonstrates just how serious global housing affordability has become.

Even professional households earning relatively strong incomes can struggle to purchase in major employment centres.

And in cities such as:

• Munich;

• Hong Kong;

• Sydney,

UBS says ownership costs are substantially higher than renting.

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Is It Better to Rent in a High-Bubble-Risk City?

Sometimes.

If the cost of owning a home is far above the cost of renting a comparable property, renting can be financially rational.

Consider:

annual rent

versus

mortgage interest + maintenance + property taxes + transaction costs + opportunity cost of your deposit.

If ownership costs far more and requires strong future appreciation to justify the difference, the investment becomes more dependent on continued price growth.

That is precisely the type of environment where valuation risk becomes important.

---

Should You Avoid Buying in Zurich or Tokyo?

Not automatically.

Someone buying a long-term family home faces different considerations from a short-term property investor.

For an owner-occupier:

• location;

• schools;

• job stability;

• mortgage affordability;

• expected holding period

may matter more than a citywide index.

For an investor, however, a high bubble-risk score should encourage stricter analysis of:

• rental yield;

• price-to-rent ratio;

• financing cost;

• future supply;

• exit liquidity.

The more expensive the property becomes relative to the rent it generates, the more appreciation is needed to justify the investment.

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A High Bubble Score Is Not a Forecast of a Crash

UBS itself highlights a useful historical pattern.

Cities that were classified as high risk in the 2021 index subsequently experienced the largest real price declines, averaging roughly 15%.

That shows valuation risk matters.

But it still does not mean every high-risk city will fall 15%.

Markets can normalise in very different ways.

For example:

Scenario 1: Price correction

Home values drop.

Scenario 2: Long stagnation

Nominal prices barely move while inflation gradually reduces real valuations.

Scenario 3: Income catch-up

Wages and rents rise faster than property prices.

Scenario 4: Renewed boom

Demand strengthens further and prices continue climbing before correcting later.

Nobody knows the exact path in advance.

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Could Real Estate Still Protect Against Inflation?

Interestingly, UBS found that housing failed to provide effective inflation protection in more than half of the cities studied during the last five years.

That challenges a popular assumption:

“Property always beats inflation.”

It does not.

UBS found that cities experiencing above-average inflation recorded real home-price declines of roughly 5% on average, while lower-inflation cities achieved much stronger real price performance.

Over the medium term, UBS still sees housing as potentially providing inflation protection at current valuations.

But entry price matters enormously.

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What Buyers Should Learn From the 2026 Bubble Index

The most useful lesson is not:

“Buy low-risk cities and avoid high-risk cities.”

That would be far too simplistic.

Instead, use the index to ask better questions.

1. Are prices rising faster than incomes?

If yes, affordability eventually becomes a constraint.

2. Are prices rising much faster than rents?

That can indicate buyers are depending increasingly on capital appreciation rather than rental value.

3. What happens if mortgage rates rise?

Highly leveraged markets can become vulnerable quickly.

4. Is housing supply genuinely scarce?

Real shortages can support expensive valuations longer than expected.

5. Am I buying for yield or appreciation?

A low-yield property depends more heavily on future resale value.

6. How long will I own it?

Short holding periods magnify transaction and market-cycle risk.

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Bubble Risk vs Housing Affordability: They Are Not the Same

This deserves its own explanation.

Consider two hypothetical cities.

City A

Apartment price: $1 million
Rent: $50,000/year
High income levels
Prices recently corrected

City B

Apartment price: $500,000
Rent: $15,000/year
Lower local incomes
Prices rising rapidly

City A may look much more expensive in absolute terms.

But City B could have a higher bubble risk if prices have become disconnected from rent and income.

That is why:

London can be low-risk but unaffordable.

And:

Dubai can remain comparatively affordable while carrying elevated bubble risk.

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What About India and Hyderabad?

UBS does not include Hyderabad, Mumbai, Bengaluru or Delhi in this 23-city index.

So it would be wrong to assign any of these Indian cities a UBS bubble-risk score.

However, Indian buyers can still use the report's methodology as a useful checklist.

Before purchasing in a rapidly appreciating market such as Hyderabad, compare:

property-price growth

with

rent growth

and

household income growth.

If a ₹1.5 crore apartment rents for only ₹30,000 or ₹35,000 per month, buyers should understand that the investment return may depend heavily on future capital appreciation.

Likewise, a plot producing no rental income is almost entirely dependent on:

• future development;

• infrastructure;

• buyer demand;

• resale price.

That does not make it a bad investment.

It makes the investment thesis different.

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Why Rental Yield Matters More When Prices Are High

Suppose an apartment costs ₹1 crore and earns ₹30,000 per month.

Annual gross rent:

₹3.6 lakh

Gross rental yield:

3.6%

Now suppose another apartment costs ₹2 crore but rents for ₹45,000.

Annual gross rent:

₹5.4 lakh

Gross yield:

2.7%

The second property produces more rent in rupee terms but provides a lower return relative to the capital invested.

That does not automatically mean it is overpriced.

But it tells the investor that future appreciation is doing more of the work.

The same principle applies in Tokyo, Zurich, Dubai, London—or Hyderabad.

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Investors Should Stop Asking Only “Will Prices Rise?”

A better property-investment checklist is:

What is my entry price?

What is the realistic rent?

What is the net yield after expenses?

What are financing costs?

How much new supply is coming?

What is the resale market?

How exposed am I if prices remain flat for five years?

A property can be an excellent investment even in an expensive city if the numbers work.

A property can also be a weak investment in a cheap city if demand and rental economics are poor.

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Which Cities Are Most Interesting to Watch Through 2027?

Based on the UBS findings, several markets deserve particular attention.

Zurich

Will extremely limited housing supply keep supporting prices despite stretched valuations?

Tokyo

Will rising Japanese financing costs finally cool the long-running property boom?

Miami

Can the market stabilise after dropping out of the high-risk category?

Dubai

Will expanding housing supply and slower real-price growth reduce bubble risk—or will international demand restart rapid appreciation?

Lisbon

Can supply catch up after a decade of extraordinary price growth?

Toronto and Vancouver

Have the roughly 10% real-price declines gone far enough to restore buyer demand?

London

Can lower real valuations revive sales even while housing remains deeply unaffordable?

These questions will matter more than simply watching next year's league-table positions.

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Frequently Asked Questions

Which city has the highest housing bubble risk in 2026?

Zurich ranks highest in the UBS Global Real Estate Bubble Index 2026 with a score of 1.69.

Is Tokyo in a housing bubble?

UBS classifies Tokyo as high bubble risk, with a score of approximately 1.54. That is a risk classification, not a prediction that Tokyo property prices will definitely crash.

Is Dubai in a property bubble in 2026?

UBS places Dubai in the elevated-risk, not high-risk, category with a score around 1.16.

Is Miami still the world's highest-risk housing market?

No. Miami has fallen from the top position it held in the previous two editions to the elevated-risk category in 2026. Zurich and Tokyo now rank higher.

Is London in a housing bubble?

UBS classifies London as low risk in 2026. Inflation-adjusted London home prices are more than 15% below their 2021 level, according to UBS.

Is New York in a housing bubble?

The UBS index places New York in its low-risk category, with a score of roughly 0.28.

Are Toronto and Vancouver still considered high-risk markets?

No. Both are classified as moderate risk in the 2026 index after real house prices declined by roughly 10%.

Does a high UBS bubble score mean property prices will crash?

No. The score measures market imbalances. Prices could correct, stagnate or become more balanced through rising incomes and rents instead.

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Final Takeaway

The UBS Global Real Estate Bubble Index 2026 tells a much more interesting story than “these cities will crash.”

Zurich and Tokyo are the only two markets in the highest-risk category.

Miami has cooled.

Dubai remains elevated but relatively attractive on some affordability measures.

Toronto and Vancouver have already gone through meaningful real-price corrections.

London and New York are classified as low risk despite remaining expensive places to live.

That leads to an important lesson for property buyers everywhere:

expensive does not automatically mean bubble.

And:

affordable does not automatically mean safe.

What matters is the relationship between:

prices, rents, incomes, financing costs and housing supply.

Before purchasing property—whether in Zurich, Tokyo, Dubai, London, New York or Hyderabad—buyers should ask whether the property's underlying economics still work if prices stop rising.

That is arguably the most useful test of all.

If the investment only makes sense because you expect someone else to pay substantially more in two or three years, the risk is already higher than it appears.