1. introduction The end of subletting and the beginning of renting
december 2025 Seoul, the heart of South Korea's real estate market, is in the midst of unprecedented structural change. the charter system, which for decades has been a rung on the housing ladder for the masses and a key tool for wealth-building, is rapidly collapsing, with high-priced rents filling the void. we are now witnessing a historic inflection point in Seoul's transformation from a charter city to a rent city.
in the past, Seoul's rental market was dominated by subletting - a mutually beneficial structure that allowed landlords to obtain interest-free financing, while tenants could solve their housing needs at a relatively low cost and fulfill their dreams of homeownership. But now, in 2025, this balance has been completely upset. A combination of subletting scams, high interest rates, and strong government lending regulations have made subletting a risky and impossible option, and renting an unavoidable reality.
in Seoul's rental market, the renting tide is rising, with the number of rental transactions doubling in the last five years. this isn't a passing fad - as of 2025, Seoul apartment rents are expected to grow at an annualized rate of 3.29 percent, the highest since statistics were compiled in 2015. rents of KRW 1 million per month are now the norm for Seoulites, and KRW 3 million per month is becoming the norm in school districts and core neighborhoods.
this report dissects the phenomenon of rent-seeking in the Seoul real estate market in 2025 through thorough data and policy analysis. In particular, it diagnoses the impact of the 10.15 Real Estate Measures and the 6.27 Measures that shocked the market, and predicts the future of the upcoming 2026 occupancy cliff. readers will take away more than just the state of the market, but insights for surviving the changing residential ecosystem.
2. a deep dive into the 2025 Seoul rental market data
data doesn't lie, and real estate indicators for Seoul in 2025 point to the decline of sublets and the explosive growth of rentals.
skyrocketing rental prices correlate with transaction volume
based on data from the Ministry of Land, Infrastructure, and Transport's Real Estate Transaction Price Disclosure System and the Korea Real Estate Institute, the growth in average monthly rent prices for apartments in Seoul has been steep. in 2020, the average monthly rent for an apartment in Seoul was around KRW 810,000, but five years later, from January to October 2025, the average monthly rent was KRW 1.13 million. this means that the cost of housing has skyrocketed by more than 40 percent in a short period of time.
the rise in rent prices is in line with the increase in transaction volume. over the past five years, the volume of residential rental transactions in Seoul has doubled. this is typical demand-driven inflation, with prices and transaction volumes rising in tandem as fewer rental units are available and demand is diverted to the rental market. In the first half of 2025 alone, rental prices increased by more than 5 percent, far outpacing the growth in sales or rental prices.
evaporation of rental inventory and supply-demand imbalance
the overheating of the rental market stems from the collapse of the charter market. as of the second half of 2025, there were 3300 fewer charter listings for Seoul apartments than a year earlier, while the number of rental listings and demand increased by nearly 3800. there is a severe shortage of supply in the market, with no rentals available.
this supply-demand imbalance is more pronounced around policy announcements at certain points in time. when comparing before and after the 6.27 measures announced in June 2025, there was an immediate drop of 700 rental listings, while the number of rental transactions increased by over 400. this suggests that policy factors pushed landlords to withdraw from the rental supply and opt to convert to renting.
how Seoul's rental market is changing in data
the following table shows the change in average monthly rent prices for apartments in Seoul from 2020 to 2025.
yearaverage rent price (in millions of won)percentage change year-over-yearkey Market Issues 2020 81 - early days of the Rent 3 Act 2021 89 9.8 percent rent shifts begin as rents skyrocket 2022 96 7.8 percent interest rate hikes begin in earnest 2023 2 6.2 percent reversal of fortunes and Bilawang crisis 2024 8 5.8 percent charter scam continues 2025 (Jan-Oct) 6 4.6 percent 10.15 Strengthening measures and lending regulations
data source: Ministry of Land, Infrastructure, and Transport Reconstructed based on real transaction price disclosure system
as the table above shows, rent prices have been rising steadily every year, and by 2025, they had surpassed the psychological resistance line of 1 million won to reach 1.3 million won. This is a major factor that is rapidly gnawing away at the disposable income of Seoul residents.
3. the Butterfly Effect of the 10.15 Real Estate Plan and the 6.27 Plan
to understand the real estate market in 2025, we need to scrutinize the government's policies. the government has issued strong regulatory measures aimed at managing household debt and stabilizing house prices, but this has had unexpected side effects on the rental market.
10.15 Highly regulated real estate measures
on October 15, 2025, the government announced a plan to stabilize the housing market. The core of the plan was to enclose the entire city of Seoul in a regulated area and tighten the purse strings.
first, the regulated area was expanded. the government has expanded the regulated areas to include all of Seoul and 12 core areas in the metropolitan area, including Gwacheon Gwangmyeong Seongnam Seongnam (Bundang Jungwon) Suwon (Yeongtong Jangan Paldal) Anyang Uiwang Hanam Yongin Suji, in Gyeonggi-do. the designation as a land transaction license zone means that homeowners must live in the area when purchasing a home, making gap investments that involve renting a home essentially impossible. this means that a channel for new rental properties to enter the market has been cut off.
second, the loan limit has been drastically reduced. the mortgage loan limit for high-priced homes exceeding KRW 1.5 billion in the metropolitan area and regulated areas has been tightened from KRW 600 million to KRW 200 million to KRW 400 million. this was intended to absorb liquidity in the high-priced housing market, but as a result, it made it difficult for landlords to raise funds to return security deposits, encouraging flipping and rent conversions.
third, we tightened borrower-level DSR regulations, most notably by raising the stressed DSR rate to a minimum of 3.0 percent. this has made it more difficult for tenants to obtain rental loans by making it more difficult for borrowers to repay.
6.27 Measures and the acceleration of rentalization
10.the 6.27 measures, which preceded the 15 measures, also had a major impact on the market. 6.the 27 measures restricted gap investments and made it harder for renters to get loans. The immediate reaction to the announcement was that the number of apartment rentals in Seoul dropped by 700.
the government's policy intentions were clear: to curb speculative demand through gap investments and to curb the rise in household debt. But the ecosystem of the rental market reacted in a much more complex way than policymakers had anticipated. When gap investments were blocked, rental providers disappeared, and when lending was blocked, rental demanders were pushed into the rental market. In the end, the two measures were a catalyst for the demise of rentals in Seoul.
structural contradictions created by policies
these policies created the following structural contradictions
drying up the seeds of charter supply South Korea's charter system relied on a private finance system in which multifamily owners leveraged tenants' security deposits to supply housing. However, the 10.15 measures blocked the entry of new multifamily owners and increased the holding tax burden on existing multifamily owners, removing the incentive to sublet.
stripping tenants of their options With even policy loans, such as the crutch rental loan, shrinking, and the thresholds for rental loans from commercial banks rising, tenants have been left with no choice but to cry and eat mustard. there is an urgent need to expand affordable public rental housing, but the pace of supply is not keeping up with demand.
4. the structural causes and background of subletting
seoul's transformation into a renting city isn't just about policy; it's a massive trend created by a combination of economic and social factors.
fear of charter scams and a breakdown in trust
the biggest psychological factor that has accelerated the phenomenon of renting is charter fraud. the fear of unreturned security deposits, sparked by the Billawang scandal, has instilled in renters the perception that subletting is a way to take their money. even if they have to pay rent to keep their security deposit, there has been a clear preference for flipping or renting with a small deposit, and this has spread to the apartment market as well, regardless of housing type.
increased holding taxes and tax shifting
for landlords, renting is no longer an attractive option. With the realization of gazetted land and the burden of holding taxes, such as the end-of-life tax on multiple occupancy, landlords need cash to pay taxes. since security deposits are a liability and not an immediate revenue stream, landlords are engaging in tax shifting behavior, turning subletting into rent and using that revenue to cover taxes. with the increased tax burden, it has become economically sensible for landlords to convert subleases to monthly rentals to cover this money.
changes in interest rates and expected returns
in the past, in times of low interest rates, it was beneficial to take the rental deposit and put it in the bank or invest it elsewhere. However, in times of high interest rates, the opposite has happened, with the interest on rental loans becoming higher than the rental conversion rate. In addition, as expectations of house price growth have dampened, the expected return on gap investments has decreased, leading landlords to seek a solid rental return (income gain) rather than market arbitrage.
5. the 2026 supply cliff scenario and the spread of fear
there's also a grim outlook that the current rent crunch is just a preview. that's because of the supply cliff predicted for 2026.
the aftermath of plummeting housing starts
in the real estate market, supply moves through the stages of permits to completion (occupancy). it typically takes three to five years for apartments to be built and occupied. however, in 2023 and 2024, apartment starts in Seoul were less than half of normal. this was due to a combination of high interest rates, the project financing (PF) crisis, and soaring construction costs, which caused builders to abandon or postpone new projects.
the plunge in starts in 2023 inevitably leads to a plunge in move-ins in 2026. experts are warning that Seoul apartment move-ins in 2026 will be the lowest on record.
soaring construction costs and reconstruction delays
the problem of rising construction costs is serious: rising raw material prices and labor costs have caused apartment construction costs to skyrocket, leading to conflicts between reconstruction and redevelopment associations and contractors. this has resulted in a number of cases where ongoing construction has been halted or sales schedules have been postponed indefinitely. this is further exacerbating the post-2026 supply shortage.
the price spike that comes with a shortage
as a basic principle of economics, when supply shrinks, prices rise. when the supply of new apartments in Seoul stops in 2026, the scarcity of new apartments will be maximized. both rental and lease prices are likely to skyrocket, with demand favoring new construction in both the sales and rental markets.
the absence of core Seoul neighborhoods is particularly painful. in highly desirable neighborhoods such as Gangnam 3 and Yongsan, the 2026 take-up is expected to be a pea in a drought. the widening premium for new apartments will have the effect of pushing up rents for existing apartments as well, leading directly to the social problem of housing affordability.
6. an in-depth report on Seoul residents' housing pain and change
behind the statistics are the concrete lives and suffering of Seoul residents. what are the realities facing renters in Seoul in 2025?
disappearing rentals
consider the case of a newlywed couple in their 30s who are about to get married. they have 200-300 million won in cash on hand, which in the past would have allowed them to rent an apartment and take out a loan for the shortfall, but the situation is different now. this is because there are 3,300 fewer apartment rentals in Seoul than there were a year ago. no matter how many times I go around the real estate market, there are no rentals, only half-rented properties with a 300 million won deposit and 1.5 million won monthly rent.
real estate agents say that the trend is automatically increasing, and they are looking for people who can't borrow money because of the charter loan restrictions, and who will move in with cash on hand. tenants are entering the rental market not because they want to, but because they have no choice.
the proliferation of high-priced rents and residential polarization
rent prices are also rising rapidly. rents rose more than 5 percent in the first half of this year, more than the increase in sales or rentals. renting is usually more expensive than renting, but the rising cost of renting is causing a double whammy.
housing polarization by income level is also intensifying. while high-income earners are able to afford high rents of KRW 3 million or more and enjoy quality housing services, those in the middle class and below are being pushed to the outskirts of Seoul or forced to choose lower quality housing. subletting restrictions and security deposit burdens are exacerbating housing insecurity among young adults, which is exacerbating the problem of rent inequality in Seoul.
7. the economic impact of rising housing costs
gentrification in Seoul isn't just a matter of personal pocketbooks; it's a macro issue that could have serious ramifications for the Korean economy as a whole.
shrinking consumption and slowing domestic demand
as housing costs take up a larger share of household income (RIR), disposable income shrinks. if KRW 1 million to KRW 2 million is spent on rent every month, there is naturally less money to spend on leisure activities such as eating out and shopping. This leads to a decrease in sales for self-employed people and businesses, which in turn leads to a vicious cycle of domestic economic downturn.
collapsing the ladder of wealth formation
the rental system used to function as a form of forced savings: instead of paying rent every month, you would save up a deposit and use it as seed money to buy your own home, which was the classic Korean formula for asset accumulation. But in a rent-driven market, money doesn't accumulate. Rent, as a monthly expense that disappears every month, will hinder asset formation for young people and the unhoused, making it difficult for them to move up the class ladder.
outward migration of rent refugees and social costs
more rent refugees will move to the outskirts of Seoul, such as Gyeonggi-do and Incheon, to escape unaffordable rents in Seoul. This will increase social costs, such as increased commuting time and worsening traffic congestion. It will also exacerbate the problems of population outflow from Seoul and overcrowding in the metropolitan area.
8. conclusions and Response Strategies The Age of Self-Relocation
in 2025, the Seoul real estate market is in the midst of an irresistible trend: the disappearance of subletting and the surge of renting. the doubling of rental transactions in five years and the average monthly rent exceeding KRW 1.13 million sends a chilling message. 10.strong government regulations, such as the 15 measures, and the anticipated move-in cliff in 2026 will further solidify this trend.
survival strategies for tenants
makefull use of contract renewal rights If you are an existing tenant, you should use your contract renewal rights to buy time and defend your housing costs within the 5 percent cap.
seekpublic rental and policy products If you can't afford rent in the private market, you should actively seek policy products such as government-supplied public rental housing or New Home Youth Safety Housing. competition is fierce, but if you win, you can enjoy housing stability at a fraction of the market rate.
take advantage ofrent tax credits If you can't avoid paying rent, make sure to take advantage of rent tax credits at the end of the year to lower your actual housing costs.
recommendations for investors and market participants
soberly analyze the market data The plunge in 2026 starts heralds rising values for new apartments. rather than fleeing the market in panic, a strategy to stay calm on the data is needed.
reorganizeyour portfolio in the face of regulation As Seoul becomes a regulated area, cash-flow-driven investments that maintain a solid single-unit strategy and allow rental income to cover holding taxes and loan interest are viable.
at the end of the day, it's every man for himself. we can't expect government policies to stabilize the market in the short term, and the only way to survive in this rent city is to read the changing market landscape and create the best strategy for your own situation.
frequently Asked Questions
Q1 How long will Seoul apartment rents continue to rise?
rising rents are likely to continue for the foreseeable future. the number of new apartments in Seoul is expected to plummet in 2026, and the combination of high interest rates and landlords passing on tax burdens is supporting rental prices.8 Upward pressure is especially high for newly built apartments.
Q2 10.15 Will real estate measures make gap investing impossible?
gap investing has become virtually impossible with the designation of Seoul as a regulated area and land transaction license zone. The live-in obligation and drastically reduced loan limits have blocked the option of buying a house while renting.
Q3 Why did the number of rental properties suddenly drop?
the biggest reason is the tightening of lending restrictions and property taxes. 6.the 27 Measures and the 10.15 Measures have removed the incentive for multiple homeowners to sublet, and existing landlords are also switching to renting to pay taxes. In addition, tenants' aversion to subletting in the wake of subletting scams has also had an impact.
Q4 How severe is the 2026 occupancy cliff?
over the past 2-3 years, due to the spike in construction costs and the PF crisis, the volume of permits and starts has plummeted to half of normal. given the length of time it takes to build apartments, occupancy in 2026 is expected to be at an all-time low, which will be a key factor in the instability of rents and sales prices.
Q5 How can I reduce my rent burden?
you should actively utilize the rent tax credit system. We also recommend that you check if you are eligible for government-backed low-interest loans, such as the Bridging Rental Loan, and apply for public rental housing provided by LH or SH by checking for openings from time to time.
conclusion
the disappearance of charters and skyrocketing rents in Seoul is now an unavoidable reality. we hope today's report serves as a compass to help you protect your investment in this rapidly changing real estate market. we will continue to provide the fastest and most in-depth coverage of key issues and strategies in the Seoul real estate market.
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