South Korea's President Warns of Japan-Style Property Crash to Push Housing Reform

South Korea's president just used one of Asia's most infamous economic cautionary tales to make a point about his own country's housing market. President Lee Jae Myung invoked Japan's early-1990s property crash — the one that helped trigger the country's so-called "lost decades" — as he prepares new measures to cool an overheated real estate sector at home.

Why Japan's Crash Is the Go-To Warning

Japan's real estate and stock market bubble burst in the early 1990s after years of speculative excess, and the country spent the next two to three decades dealing with stagnant growth, deflation, and a housing market that never really recovered. It's become shorthand economists reach for whenever they want to warn about the dangers of asset bubbles left unchecked. Lee's decision to bring it up publicly signals just how seriously his government views the risk brewing in Seoul.

South Korea's Real Estate Problem, By the Numbers

The core issue: South Korean households have an enormous share of their wealth tied up in real estate compared to other developed economies. As of end-March 2025, real assets made up 75.8% of Korean household wealth, versus just 24.2% in financial assets like stocks and bonds. That's an extreme imbalance, and it means any serious correction in housing prices would hit ordinary families far harder than it would in countries with more diversified household wealth.

Lee said "quite a few people" are worried Korea could be staring down its own version of Japan's lost decades — a stark statement from a sitting president trying to build public support for intervention.

A President Who Doesn't Shy From Bold Claims

This isn't the first time Lee has made a dramatic economic prediction. Before winning the 2025 election, then-candidate Lee pledged to fix the "Korea discount" — the long-standing tendency for Korean stocks to trade cheaper than global peers — and set an ambitious target of pushing the benchmark Kospi index to 5,000 during his term. The Kospi was hovering around 2,500 at the time he made that pledge. It later briefly topped a record high in January 2026, riding an AI chip-driven rally, showing Lee's bold predictions haven't always missed the mark.

What Comes Next

Lee's administration has been trying to redirect household wealth out of real estate and into financial markets, part of a broader push to rebalance the economy. Framing the housing market in terms of Japan's collapse is a way to build urgency for reforms — whether that means new taxes, lending restrictions, or other cooling measures aimed at Seoul's property sector specifically.

For a country where real estate is practically a national obsession, invoking Japan's crash isn't subtle — but that appears to be exactly the point.