If you're renting a sublease property, unexpected troubles can arise when the contract relationship between the property owner and management company changes. This guide explains how sublease agreements work, their potential impact on tenants, and how to handle problems if they occur.

Reviewed by: Nobuyuki MoriPresident, M-Assets Co., Ltd. / Licensed Real Estate Transaction Specialist (Miyagi #018212)
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Sublease properties involve a complex contract structure with three parties: the owner, management company, and tenant. This guide clarifies key issues that foreign renters should understand beforehand—from confusion about points of contact when problems arise, to unclear responsibility in move-out settlements, to risks if the management company fails—from an industry practice perspective.
In a standard rental, there is a direct contractual relationship: "Owner (landlord) → Tenant (renter)." With a sublease (or subrental), the structure is: "Owner → Sublease operator (management company) → Tenant."
Specifically:
From the tenant's perspective, the landlord is the "sublease operator (management company)," not the owner. The tenant has no direct contract with the owner.
Tenants are sometimes not explicitly informed at the time of lease signing that "this property is a sublease." During the property-search process, it can be difficult to distinguish whether a management company is simply a "property manager" or a "sublease operator (sublessor)."
Problems particularly arise in the following situations:
If the sublease operator ends its contract with the owner or goes bankrupt, the contractual relationship between the tenant and the sublease operator is also affected.
When an owner seeks to terminate the contract with the sublease operator, the question becomes: how are tenants legally protected?
The Building Lot and House Leasing Law provides some level of protection to "subtenants (tenants)."
Some sublease operators use a model where they "guarantee a fixed rent payment to the owner." If the operator faces financial difficulties and stops paying the owner, it can escalate to the owner demanding that tenants vacate (this is known as a "rent guarantee dispute").
Check the "Landlord" field in the lease agreement.
If any of these are present, it may be a sublease arrangement.
Under the Real Estate Transactions Law, the Important Matters Explanation document must disclose sublease information. Check the section titled "Matters Related to Sublease of Rental Housing."
The most reliable way is to directly ask: "Is this property leased directly from the owner, or is the management company subleasing it?"
Even if the sublease operator goes bankrupt, tenants have the right to demand the return of their security deposit. Claims must be filed with the bankruptcy trustee or court.
If faced with an improper eviction demand, follow these steps:
Living in a sublease property is not illegal in itself, and there is no problem if you rent from a reputable operator. However, if you move in without understanding the operator's financial situation or how the contract works, you risk encountering problems. The best way to prevent troubles is to verify whether the property is a sublease by reviewing the lease agreement and Important Matters Explanation document, and if you have any questions, consult with a real estate agent or attorney before signing the contract.
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