And by then, it’s too late. The map above, based on data from the Real Estate Bubble Index by UBS, serves as an early warning system, evaluating 25 global cities and scoring them based on their bubble risk.

Reading the Signs

Bubbles are hard to distinguish in real-time as investors must judge whether a market’s pricing accurately reflects what will happen in the future. Even so, there are some signs to watch out for. As one example, a decoupling of prices from local incomes and rents is a common red flag. As well, imbalances in the real economy, such as excessive construction activity and lending can signal a bubble in the making. With this in mind, which global markets are exhibiting the most bubble risk?

The Geography of Real Estate Bubbles

Europe is home to a number of cities that have extreme bubble risk, with Frankfurt topping the list this year. Germany’s financial hub has seen real home prices rise by 10% per year on average since 2016—the highest rate of all cities evaluated.

Two Canadian cities also find themselves in bubble territory: Toronto and Vancouver. In the former, nearly 30% of purchases in 2021 went to buyers with multiple properties, showing that real estate investment is alive and well. Despite efforts to cool down these hot urban markets, Canadian markets have rebounded and continued their march upward. In fact, over the past three decades, residential home prices in Canada grew at the fastest rates in the G7. Despite civil unrest and unease over new policies, Hong Kong still has the second highest score in this index. Meanwhile, Dubai is listed as “undervalued” and is the only city in the index with a negative score. Residential prices have trended down for the past six years and are now down nearly 40% from 2014 levels. Note: The Real Estate Bubble Index does not currently include cities in Mainland China.

Overheated markets are nothing new, though the COVID-19 pandemic has changed the dynamic of real estate markets. For years, house price appreciation in city centers was all but guaranteed as construction boomed and people were eager to live an urban lifestyle. Remote work options and office downsizing is changing the value equation for many, and as a result, housing prices in non-urban areas increased faster than in cities for the first time since the 1990s. Even so, these changing priorities haven’t deflated the real estate market in the world’s global cities. Below are growth rates for 2021 so far, and how that compares to the last five years.

Overall, prices have been trending upward almost everywhere. All but four of the cities above—Milan, Paris, New York, and San Francisco—have had positive growth year-on-year. Even as real estate bubbles continue to grow, there is an element of uncertainty. Debt-to-income ratios continue to rise, and lending standards, which were relaxed during the pandemic, are tightening once again. Add in the societal shifts occurring right now, and predicting the future of these markets becomes more difficult. In the short term, we may see what UBS calls “the era of urban outperformance” come to an end. on Cities become “expensive” due to a variety of factors such as high demand for housing, a concentration of high-paying businesses and industries, and a high standard of living. Additionally, factors such as taxes, transportation costs, and availability of goods and services can also contribute to the overall cost of living in global cities. The infographic above uses data from EIU to rank the world most and least expensive cities to live in. To make the list, the EIU examines 400+ prices for over 200 products and services in 172 cities, surveying a variety of businesses to track price fluctuations over the last year.

Inflation + Strong Currency = Expensive Cities

If you live in a city where many residents find it challenging to put a roof over their heads, food on their plates, and make ends meet, you live in an expensive city. But if this inflation is compounded with a strong national currency, you may live in one of the world’s most expensive cities. Singapore and New York City tied for the first rank amongst the world’s most expensive cities in 2022, pushing Israel’s Tel Aviv from the first place in 2021 to the third place in 2022. Both these cities had high inflation and a strong currency. Surprisingly, this is the Big Apple’s first time atop the ranking. The city with one of the most expensive real estate markets worldwide, Hong Kong ranked fourth in this list, followed by Los Angeles, which moved up from its ninth rank in 2021.

Poor Economies = Cheaper Cities

Asia continues to dominate the list of the world’s least expensive cities, followed by parts of North Africa and the Middle East. Though affordability sounds good at face value, sitting at the bottom of the ranking isn’t necessarily a coveted position. While the cost of living in some of the cities in these nations is low, it comes at the price of a weak currency, poor economy, and, in many cases, political and economic turmoil. The decade-long conflict in Syria weakened the Syrian pound, led to a spiraling inflation and fuel shortages, and further collapsed its economy. It’s no surprise that its capital city of Damascus has maintained its position as the world’s cheapest city. Tripoli and Tehran, the capitals of Libya and Iran, respectively, follow next on this list, reflecting their weakened economies. Meanwhile, seven cities in Asia with the common denominator of high-income inequality and low wages dominate the list of the world’s cheapest cities. These include three Indian cities, Tashkent in Uzbekistan, Almaty in Kazakhstan, Pakistan’s most populous city of Karachi, and Sri Lankan capital–Colombo.

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