Why it matters. Seoul housing is one of the world's most closely watched and policy-sensitive markets, and the way a single tax deadline reshaped sales shows how government levers — not just demand — drive Korean property prices.
Background. South Korea taxes owners of multiple homes heavily to discourage speculation, and successive governments have layered on tools like land-transaction permit zones that require buyers to live in what they purchase. 'Jeonse' is a uniquely Korean lease where tenants pay a large lump-sum deposit instead of monthly rent, which enables 'gap investment' — buying a tenanted home with minimal cash. The Gangnam 3 districts are Seoul's wealthiest enclaves and a perennial barometer for the national market.
What to watch next. Watch whether the bounce in Gangnam prices spreads citywide or fades now that the tax-driven selling has ended and tighter loan rules remain in place.
Seoul’s apartment market cooled sharply in May after a temporary tax break for owners of multiple homes expired on May 9, with new land-transaction permit applications falling 32.0% from the previous month, the Seoul Metropolitan Government said on June 11. Even so, prices across the city edged higher, and the wealthy Gangnam district turned positive again as bargain listings dried up.
What the Numbers Show
In South Korea, owners of two or more homes normally pay a heavy surcharge on capital gains tax when they sell. The government had suspended that surcharge temporarily, prompting many multi-home owners to dump properties before the grace period closed. Once it ended on May 9, deal-making stalled.
New permit applications for Seoul apartments totaled 6,087 by the end of May, down from 8,952 in April. The drop suggests that the wave of tax-driven selling had largely run its course.
The data come from Seoul’s land-transaction permit system, a regulation that requires buyers in designated zones to obtain government approval and to actually live in the property they purchase. The rule, extended citywide last October, is designed to curb speculation. From then through the end of May, the city logged 43,266 applications, of which 95.8% (41,453) have been processed.
The Map Tilts Toward Wealthy Districts
Loan restrictions have kept most activity in Seoul’s cheaper outer districts, where mid- and small-sized apartments priced under 1.5 billion won (roughly $1.1 million) are concentrated. But as the tax deadline neared, selling shifted toward pricier central areas.
The outer districts’ share of applications fell from 67.5% in February to 55.0% in the first week of May. Over the same span, the combined share of the Gangnam 3 districts (Gangnam, Seocho and Songpa — Seoul’s most expensive residential belt) and Yongsan jumped from 10.9% to 20.7%. The so-called Han River belt — seven riverside districts including Mapo, Seongdong and Gangdong — rose slightly from 21.6% to 24.2%.
A city official said the pattern reflects owners of high-value homes rushing to sell to minimize taxes. The effect was short-lived: after the grace period ended, the Gangnam-Yongsan share dropped back to 12.2%, returning to January levels.
A Loophole for First-Time Buyers
To unlock supply, the government also offered a temporary exemption: a person who owns no home and buys a multi-home owner’s leased apartment may defer the live-in requirement until the sitting tenant’s lease expires. That matters because Korea’s land-transaction zones normally ban so-called gap investment — buying a property already rented out under jeonse, Korea’s lump-sum deposit lease system, and putting little of one’s own cash down.
Demand for this exemption clustered in expensive neighborhoods. Of 12,165 applications filed from April through the first week of May, 3,311 (27.2%) sought the live-in deferral. The Han River belt led at 38.2%, followed by Gangnam and Yongsan at 25.5%.
Prices Keep Climbing
Despite the slowdown in volume, prices rose. Transaction values logged in May were up 1.55% from April. Gangnam and Yongsan reversed course to gain 0.81% as discounted listings sold off and ordinary deals returned. Other areas climbed faster: the Han River belt 1.36%, the 10 northern districts 1.72%, and the four southwestern districts 2.08%.
