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Does Buying the House You Rented Also Erase Your Security? | A Supreme Court Judgment Clarifying When Opposing Power Is Extinguished

In a case in which the issue was whether the opposing power and the right to preferential reimbursement previously acquired are maintained where a tenant directly purchases the housing in which the tenant had been residing under a jeonse arrangement, the Supreme Court held that those rights are all extinguished at the time ownership is acquired.

The lower court found that the tenant lost the opposing power and the right to preferential reimbursement upon acquiring the housing, and that a ground for exemption under the jeonse-fund safe-loan guarantee terms therefore arose.

The Supreme Court likewise accepted this reasoning and held that, once the tenant's possession can no longer be regarded as possession based on the leasehold, the resident registration loses its function as a method of public notice, and the opposing power is extinguished at the time ownership is acquired. (Supreme Court, Decision of January 8, 2026, 2025 Da 213466)

CONTENTS
  • 1. Overview of the Housing Sale Contract Case
    • - The Key Issues in This Case
  • 2. The Standard for Maintaining Opposing Power as Determined by the Supreme Court
    • - Opposing Power Is a Right Premised on the Public-Notice Function
    • - The Requirements for Opposing Power Must Be Continuously Maintained
    • - Acquisition of Ownership Changes the Basis of the Possession
    • - The Resident Registration No Longer Performs a Public-Notice Function
  • 3. The Judgment and Its Legal Effect
    • - A Key Summary of the Judgment
  • 4. Matters That Must Be Checked in Practice
    • - Matters to Be Checked
    • - The Practical Significance of the Judgment
  • 5. Responding to Real Estate Disputes and Legal Advisory
    • - Cases Requiring Legal Review
    • - Assistance from Daeryun Law Firm

1. Overview of the Housing Sale Contract Case

This case concerned how existing rights are treated where the status of a tenant changes while a jeonse contract, a jeonse-fund loan, and a guarantee contract are combined.

In particular, because the tenant directly purchased the relevant housing while maintaining the lease relationship, the central question was whether the existing rights could be maintained when the legal basis for the possession changed.

The tenant leased a house located in Gwanak-gu, Seoul, for a deposit of 450 million won, and held opposing power and the right to preferential reimbursement through the move-in report and the fixed date.

The tenant subsequently used a jeonse-fund safe loan, obtained a guarantee from the Korea Housing and Urban Guarantee Corporation, and provided security by assigning the deposit-refund claim to the guarantee corporation.

The problem arose when the tenant purchased the relevant housing during the lease term.

The tenant completed the registration of ownership transfer on the basis of the sale, and thereafter did not repay the loan. The financial institution then demanded that the guarantee corporation perform the guaranteed obligation.

The guarantee corporation argued that the tenant no longer maintained the opposing power and the right to preferential reimbursement, and was therefore exempt under the terms, and a dispute arose as a result.

The Key Issues in This Case

Issue 1. Whether the opposing power is maintained where the tenant purchases the housing

Issue 2. Whether the right to preferential reimbursement continues to exist

Issue 3. Whether a ground for exemption under the guarantee terms applies

This case was decided with a focus on whether the existing rights can still be recognized where the legal basis for the tenant's possession has changed even though the possession itself continues.

In particular, the central question was whether the opposing power and the right to preferential reimbursement are rights maintained on the premise of a public-notice function, and the case is significant in that such a change in rights, when combined with a guarantee contract, directly affects even the scope of the guarantee institution's liability.

2. The Standard for Maintaining Opposing Power as Determined by the Supreme Court

The Supreme Court located the essence of the opposing power in its public-notice function and decided the case on the basis of whether that public-notice function is maintained.

Opposing Power Is a Right Premised on the Public-Notice Function

The resident registration functions as a means of public notice that externally reveals the existence of the leasehold to third parties.

The resident registration must therefore make it possible to recognize that the relevant possession is based on the leasehold, and through this, third parties must be able to assess the rights relationship.

Opposing power takes effect only within the scope in which this public-notice function is maintained.

The Requirements for Opposing Power Must Be Continuously Maintained

Opposing power is not a right that is completed merely by satisfying the requirements of a move-in report and possession on a one-time basis.

Those requirements must be continuously maintained for as long as the right exists, and if their premise collapses in the interim, opposing power can likewise no longer be recognized.

In other words, opposing power is a right premised not on an “acquisition requirement” but on a “maintenance requirement.”

Acquisition of Ownership Changes the Basis of the Possession

Where a tenant purchases the housing, even if the same state of possession is maintained, its legal basis is converted from the leasehold to ownership.

This change directly affects which right the relevant possession gives public notice of, and ultimately the standard for judgment is not the outward form of the possession but the underlying legal title.

The Resident Registration No Longer Performs a Public-Notice Function

After ownership is acquired, the resident registration no longer performs the function of externally revealing the existence of the leasehold.

This is because, from the standpoint of a third party, it is impossible to distinguish whether the relevant possession is based on the leasehold or on ownership.

Where the public-notice function has thus been lost, the requirements for opposing power are likewise assessed as not being maintained

3. The Judgment and Its Legal Effect

The Supreme Court held that, where a tenant purchases the housing and acquires ownership, the rights previously recognized on the basis of the existing leasehold can no longer be maintained.

In particular, because opposing power is a right premised on the public-notice function, the Court held that its effect is also extinguished at the moment the legal basis for the possession changes.

A Key Summary of the Judgment

Category

Substance of the Determination

Opposing Power

Extinguished at the time ownership is acquired

Right to Preferential Reimbursement

Extinguished simultaneously with the extinguishment of opposing power

Public-Notice Function

Loss of the resident registration's function of giving public notice of the leasehold

Guarantee Liability

The guarantee institution is exempt under the terms

This judgment is a case that made clear that “protection is recognized only for as long as the tenant's status is maintained.”

It serves as an important practical standard in that the acquisition of ownership can lead not to a strengthening of rights but to the termination of the existing tenant-protection structure.

4. Matters That Must Be Checked in Practice

This judgment clearly shows how the structure of rights changes in the course of transitioning from a jeonse arrangement to a purchase.

In particular, because the previously recognized protection is also extinguished where the tenant's status is not maintained, review at the stage before the transaction is important.

In an actual transaction, the following matters must be checked.

Matters to Be Checked

• The possibility of maintaining opposing power where the housing is purchased while in a jeonse arrangement

• Whether the right to preferential reimbursement is extinguished, and the time of such extinguishment

• Whether the jeonse-fund loan and the guarantee are maintained

• Whether a ground for exemption under the guarantee terms applies

If a purchase proceeds without prior review, it may lead to a structure in which the existing rights are extinguished and only the debt remains, so caution is required.

The Practical Significance of the Judgment

This judgment made clear that opposing power is not a right maintained merely by satisfying formal requirements, but a right that continues to exist only where the public-notice function is continuously maintained.

It also made clear that, where the status of a tenant is converted into that of an owner, the existing rights are not automatically succeeded to, but rather the very legal structure that serves as their premise is changed.

Ultimately, a transaction transitioning from a jeonse arrangement to a purchase can lead not to a strengthening of rights but to the termination of the existing protection, and this serves as a very important standard for judgment in practice.

5. Responding to Real Estate Disputes and Legal Advisory

The jeonse deposit, opposing power, and the right to preferential reimbursement are not rights that operate independently of one another, but are combined and operate within a single structure.

Accordingly, where any one element is changed, it affects the entire structure of rights.

Cases Requiring Legal Review

  • Where one intends to purchase a house in which one is currently residing under a jeonse arrangement
  • Transactions involving a jeonse-fund loan and a guarantee
  • Where whether opposing power or the right to preferential reimbursement is maintained is at issue
  • Where a dispute with a guarantee institution or a financial institution is anticipated

Assistance from Daeryun Law Firm

In the course of transitioning from a jeonse arrangement to a purchase, the structure of rights may be severed or unanticipated legal liability may arise, so accurate legal review and structural analysis are necessary from the stage before the transaction.

In particular, where whether opposing power and the right to preferential reimbursement continue to exist is at issue, assistance that reviews the time of extinguishment of the rights together with the linkage structure of the financial contract is important.

Real estate attorneys provide professional assistance in the following areas.

• Legal assessment and risk analysis regarding whether opposing power and the right to preferential reimbursement continue to exist upon a jeonse-to-purchase transition

• Analysis of whether a ground for exemption applies through review of the structure of the jeonse-fund loan and the guarantee terms

• Establishing the scope of liability and a response strategy in the event of a dispute with a guarantee institution or a financial institution

• Designing the reconstruction of rights and response measures in light of changes to the lease deposit-refund claim and the security structure

• Providing advance advisory on the possibility of extinguishment of rights and the legal effects at the pre-transaction stage

If you need related advice, you are welcome to review your response strategy through the 🔗Real Estate Attorney Legal Consultation Booking.

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