In the whirlwind world of South Korea’s real estate, the past year has been nothing short of dramatic. Apartment prices—especially those of mid-to-large units—have soared, urgent sales have come and gone, and policymakers are scrambling to keep up with the ever-evolving landscape. If you’re wondering how all these threads tie together, you’re not alone. Let’s unravel the story.
According to recent data from real estate analytics firm R114, the average sales price for apartments in the Seoul metropolitan area jumped by 8.2% in the last year, hitting 28.46 million KRW per 3.3㎡. But the real headline-grabbers were the mid-to-large apartments—those over 85㎡—which saw an even bigger leap of 8.36%. In comparison, smaller apartments under 60㎡ increased by 7.75%. This pattern isn’t just a blip; it’s part of a longer-term trend. Over the past five years, the price index for large apartments over 135㎡ in the metropolitan area rose by 10.69 percentage points, while their smaller counterparts managed just 3.63 percentage points, as reported by the Korea Real Estate Board.
Zooming in on Incheon, the contrast is even sharper. Large apartments there increased by 6.74 percentage points, while small ones actually dropped by 1.13 percentage points during the same period. The message is clear: size matters, and buyers are increasingly willing to pay a premium for more space.
But why this surge in mid-to-large apartment prices? Industry insiders point squarely at supply—or the lack thereof. Over the last five years, only about 7.4% of the 822,507 new apartments in the metropolitan area were mid-to-large sized, totaling just 60,847 units. This scarcity has made these properties even more desirable, and that’s showing up in the price tags.
Government policy has played its part, too. In June 2025, new regulations capped mortgage loans for home purchases in regulated areas at 600 million KRW. By October, the rules tightened further, slashing loan limits for homes priced above 1.5 billion KRW. The effect was immediate. After the June 27 policy announcement, the price index for large apartments over 135㎡ in the metropolitan area jumped from 96.59 in June to 97.27 in July—a 0.7 percentage point increase in just one month. Over the next three months, it climbed another 1.33 percentage points, outpacing all other apartment sizes.
This regulatory squeeze, especially on multi-homeowners, has also shifted market dynamics. The recent expiration of a moratorium on capital gains tax surcharges for multi-homeowners (as of May 9, 2026) brought an end to a months-long flurry of bargain-priced urgent sales. During the moratorium, some apartments in Seoul’s prime areas were listed up to 1 billion KRW below market value! Real estate agents recount stories of buyers snapping up these deals sight unseen, eager to lock in a rare discount before the window closed.
But that window has now slammed shut. With the tax surcharge back in force—20% extra for two-homeowners, 30% for those with three or more in regulated areas—experts predict a sharp drop in urgent sale listings. "It’s become much harder to find attractive bargains now," a realtor in Seocho-gu’s Banpo-dong told Hankyung. The expectation is that many owners will choose to hold onto their properties, hoping for further price appreciation, rather than sell and face hefty taxes.
That’s not the end of the story, though. The government is eyeing further reforms, including changes to the long-term holding special deduction, shifting the focus more toward actual residence rather than simple ownership. Loan regulations for non-resident single-homeowners are also set to tighten. Kim Yong-bum, a senior policy official, noted, "We need to reconsider whether it’s right for the same 40% deduction to apply equally to both holding and residence periods. It’s only natural to stop loans that aren’t related to genuine end-users, and we’re studying what to do about existing loans."
Market watchers say these changes could make non-resident single-homeowners the next big variable. If the tax burden grows, some of these owners might decide to sell, injecting fresh supply into the market. But that’s far from certain. If price expectations remain high, many may simply hold on, which could worsen the already tight rental market. As one anonymous expert told Hankyung, "If non-resident owners move in, existing tenants could be pushed out, making the rental market even tougher."
Meanwhile, the hottest price gains have been concentrated in some eye-popping deals. According to data from real estate platform Hogangnono, the biggest price jump as of May 11, 2026, was seen at Banpo Le 2nd in Seocho-gu, Seoul, which sold for 4.9 billion KRW—a whopping 900 million KRW (22%) more than the previous transaction. Not far behind was Yuwon Riverside in Dongjak-gu, which soared by 600 million KRW (75%) to 1.4 billion KRW. Several other complexes in Seoul and Gyeonggi Province also posted double-digit percentage gains, underscoring just how feverish the market has become.
On the supply side, new developments are trying to keep up with demand, especially for those coveted mid-to-large apartments. In May 2026, the Pyeongtaek Godeok Umi Lin Prestige complex began pre-sales, offering 743 units in popular sizes ranging from 84㎡ to 111㎡. Hyundai Engineering’s Hillstate Guwol Art Park in Incheon launched with 496 units, including 124 of the 101㎡ type, and boasts a direct connection to the Incheon Line 1 Art Hall station. POSCO E&C’s The Sharp Songdo Granteur, also in Incheon, is rolling out 1,544 apartments and 96 officetels, mostly mid-to-large sizes between 84㎡ and 198㎡, near planned parks and top schools.
Yet, even as developers race to build, the official housing supply statistics may not tell the full story. A recent report from the LH Land and Housing Institute highlighted the growing importance of officetels—hybrid office-residential units, especially in high-income districts like Gangnam. From 2010 to 2021, office-tel transactions in Gangnam’s three main districts made up 21.7% of total deals, five times higher than in northern Seoul. The report found that, over time, officetels are having a bigger impact on apartment prices, particularly in Gangnam, where their influence on price movements is 13 times higher than the citywide average. Despite this, officetels are still legally classified as non-residential, meaning they’re often left out of official housing statistics—a gap the report urges policymakers to close. "If officetels are omitted from supply statistics, the actual housing supply will be underestimated, leading to distorted policy decisions," the report stressed.
In a market this complex and fast-moving, the only certainty is change. With supply shortages, shifting regulations, and new types of housing blurring old boundaries, both buyers and policymakers have their work cut out for them. For now, all eyes are on the next move—because in South Korea’s real estate game, timing and strategy are everything.