As part of AIRINC’s global cost-of-living research, our analysts regularly conduct on-the-ground housing surveys, interviewing local real estate agents, property managers, and relocation providers to understand how rental markets are evolving. These insights help global mobility teams anticipate changes that could impact assignment planning.
During my recent research trip to Seoul, I met with housing professionals across several districts to evaluate current rental trends. While Seoul’s housing market has long been defined by the Jeonse (전세) deposit system (also known as "key money"), conversations with local sources and recent market data indicate that 2025 marks a turning point. The market is shifting more rapidly toward monthly rent structures, driven by new government policies, tighter lending rules, and changing landlord preferences.
For organizations relocating employees to South Korea, this shift has important implications for housing availability, assignment budgeting, and competition for expatriate-friendly housing.
Seoul’s rental market is undergoing a structural transition away from Jeonse, the traditional deposit-based rental system, toward monthly rent models such as Wolse (월세) and Ban-Jeonse (반전세).
Several factors are accelerating this shift, including:
Stricter mortgage and lending regulations
Government policies targeting housing speculation
Increased oversight of rental deposit insurance following fraud cases
For global mobility teams, these developments may affect housing allowances, assignment cost planning, and home-finding timelines.
Seoul’s housing market operates through three main rental structures, each with different cost implications for expatriate assignments.
Jeonse (전세) is a uniquely Korean rental system in which tenants provide a large refundable deposit instead of paying monthly rent. At the end of the lease—typically two years—the deposit is returned to the tenant.
In an effort to curb property speculation, the Korean government expanded Land Transaction Permit Zones across much of Seoul. Within these zones, property buyers must live in the property themselves for a specified period—usually two years—before renting it out.
This rule targets a practice known as “gap investment", where investors used a tenant’s Jeonse deposit to finance the purchase of property. As a result, many units that might previously have entered the Jeonse rental market are no longer available for lease, reducing supply and pushing deposit requirements higher for the remaining units.
South Korean financial authorities have also implemented tighter lending policies to manage rising household debt.
Recent changes include:
Lower Loan-to-Value (LTV) limits
Stronger Debt Service Ratio (DSR) requirements
Stress testing for certain mortgages and Jeonse loans
These measures make it more difficult for tenants to finance large Jeonse deposits and limit landlords’ ability to leverage property investments. Consequently, many landlords are shifting toward Wolse or Ban-Jeonse agreements, which provide steady monthly income instead of a large refundable deposit.
Several high-profile Jeonse fraud cases have led to tighter government regulation of deposit guarantee insurance. Authorities have reduced the maximum Jeonse-to-property-value ratio that qualifies for insurance coverage. These changes increase the administrative burden and risk associated with offering Jeonse leases.
For international assignees, this reinforces the importance of carefully reviewing contracts and ensuring appropriate deposit protection when entering large-deposit agreements.
Historically, many international assignees in Seoul have rented through Wolse contracts, which provide predictable monthly costs and require smaller upfront deposits. However, the current market shift is creating a new dynamic.
As more local tenants move away from Jeonse, a growing number are entering the Wolse market, increasing competition for the same housing typically sought by expatriates. This trend is particularly visible in districts popular with international residents, including Yongsan and Gangnam.
In these neighborhoods, local housing sources report:
Faster inventory turnover
Rising monthly rents for premium units
Increased demand for high-quality apartments
For global mobility teams, this means that housing planning in Seoul may require earlier preparation than in previous years. Proactive strategies—such as early home-finding tours, close coordination with relocation providers, and deposit protection planning—can help ensure assignees secure suitable housing in a competitive market.
A lesser-known arrangement called Kalse (깔세) involves prepaying several months' rent for a very short-term stay with minimal deposit. This remains a niche arrangement, mostly used for commercial leases or specific short-term residential needs (e.g., three to six months). These are not standard residential leases and operate with less legal protection than the three core types. They are risky for long-term assignments and should be considered with caution.
Several trends are shaping Seoul’s housing market in 2025:
Jeonse supply is declining, making deposit-based leases harder to secure.
Monthly rental contracts are becoming the dominant market model.
Competition for expatriate-standard housing is increasing, particularly in central districts.
Rental budgets may need adjustment as demand rises for premium Wolse units.
Earlier home-finding support is increasingly important for successful assignments.
Understanding these developments can help mobility teams plan housing allowances, assignment costs, and relocation timelines more effectively.
Yes, but its share of new rental contracts is declining as landlords increasingly prefer monthly rent structures.
Most expatriates rent through Wolse contracts, which combine a moderate deposit with monthly rent payments.
Government regulations, tighter lending policies, and stricter deposit insurance rules have made Jeonse less attractive for landlords.
Staying ahead of these market shifts is no longer just about finding a place to live—it’s about ensuring assignees have a secure and comfortable home that supports their success in Seoul.
AIRINC continuously monitors housing markets worldwide through our cost-of-living and housing research, with data regularly updated to reflect the latest market conditions. If you would like to learn more about housing trends in Seoul or any other destinations, please contact your AIRINC representative.
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Special thanks to Apex Relo for their expert guidance and local market insights.