Navigating a Tenant’s Request to Sublet While Traveling

About two years ago, a tenant in one of my nine buildings, a software engineer who had rented the same 1LDK for 6 years, messaged me asking if he could sublet his unit for 8 months while he took a work assignment in Singapore. He offered an extra 5,000 yen a month for the trouble and promised a friend from his company would move in and take care of everything. It sounded simple. It was not, and sorting through it properly took me almost 3 weeks of back and forth.

Requests like this come up more often than most landlords admit. Over 15 years of self-managing my properties, I would guess close to 20 percent of my long-term tenants have asked about some form of temporary sublet or extended absence arrangement, usually tied to an overseas posting, a hospital stay, or a family situation back in their hometown. If you own rental property in Japan long enough, this conversation is coming your way eventually.

Why Tenants Ask to Sublet Instead of Just Breaking the Lease

Most tenants who ask about subletting are not trying to pull anything shady, they are trying to avoid the cost of breaking a lease early. A standard Japanese lease, or chintai keiyaku, usually locks tenants into either a 2-year term with an early termination penalty equal to 1 to 2 months of rent, or a fixed-term contract with no early exit at all. For a tenant facing an 8-month posting abroad, paying that penalty plus the cost of moving everything out and back in again can easily run past 200,000 yen once you add storage fees. Subletting looks like the cheaper option on paper, so I understand the instinct even when I cannot always say yes to the request as proposed.

What the Lease Actually Says About Subletting

Nearly every standard lease template used in Japan includes a clause requiring the landlord’s written consent, or shonin, before a tenant can sublet, transfer occupancy, or even let a non-family member live in the unit long term. This is not a minor formality. Under the Civil Code’s trust-relationship doctrine that governs Japanese leases, a tenant who sublets without consent can be found to have broken the basis of trust the contract depends on, which is grounds for termination even mid-contract. I have pointed this clause out to tenants twice over the years when they assumed subletting to a friend was simply their own business once rent was paid on time.

The Risks I Actually Weigh Before Saying Yes

Saying yes to a sublet is not free of downside for me as the landlord, even when the tenant means well. A few things I check every time:

• Whether my guarantor company, or hoshou gaisha, still covers unpaid rent if the paying occupant changes without an updated contract
• Whether my landlord liability insurance policy excludes damage caused by an occupant who was never screened or registered
• Who is responsible for restoration costs, or genjou kaifuku, if the subletting occupant causes damage the original tenant cannot pay for
• Whether the building’s management rules even permit subletting at all, since 2 of my 9 properties have management associations that ban it outright
• How I would actually evict a subletting occupant if something went wrong, since my contract is with the original tenant, not the person living there

None of these risks are hypothetical. On one property back in 2019, a tenant let a relative stay for what he described as a short visit that stretched past 4 months, and when a pipe burst in the unit, my insurer initially balked at the claim because the registered occupant on file was not the person actually living there at the time.

Short-Term Absence Versus a Formal Sublet

Not every travel situation needs a formal sublease. I draw the line at around 60 to 90 days. If a tenant is traveling for that window and simply wants a friend checking on the apartment or watering plants, I treat it as an absence, not a sublet, and nothing changes on paper since the paying tenant remains the sole occupant of record. Past 90 days, especially once someone else is actually sleeping there regularly and receiving mail, I require a written sublease addendum, updated guarantor paperwork, and identification for the new occupant. That threshold is not written into Japanese law specifically, it is a line I settled on after the 2019 incident, and I apply it consistently across all my units now.

How I Actually Handled the Singapore Request

For the engineer heading to Singapore, I agreed to the sublet but only after his colleague completed the same background and income screening I run on any new applicant, including proof of income above 3 times the monthly rent. I charged a one-time administrative fee of 10,000 yen to process the addendum, required the original tenant to remain the guarantor of record, and set the sublease term to expire automatically after 8 months rather than rolling over. I also confirmed with my insurer in writing that the named sub-occupant was covered before handing over keys. The whole process took about 3 weeks from first request to signed paperwork, which felt slow to the tenant but protected both of us.

A Simple Framework for Your Own Decision

When a tenant brings this request to you, resist the urge to answer on the spot. Pull the lease and confirm the consent clause exists, check with your guarantor company and insurer about coverage triggers, decide whether the absence falls under your own short-term threshold, and only then negotiate terms like fees and screening. Rushing an answer, either a reflexive no or an easy yes, is how landlords end up with coverage gaps or damaged trust with a tenant who has otherwise paid on time for years.

That is the approach I use across all 9 of my properties: treat every sublet request as a real contract change, screen the new occupant the same way I would screen anyone else, and never assume good intentions are the same thing as adequate paperwork.

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