In our experience, home insurance is one of the less-discussed parts of buying a property in Japan.
It usually comes up toward the end of the process, alongside mortgage paperwork, closing costs, and other practical details you need to sort out before you take ownership.
If you are a foreigner renting or buying a property in Japan, the terminology can be more confusing than it needs to be. You may be told you need kasai hoken (火災保険), which translates directly as “fire insurance,” even though the policy can protect against considerably more than fire. Then there is earthquake insurance, which works under a separate system and does not simply insure the remaining risks that fire insurance leaves out.
The coverage you need can also look very different depending on whether you are buying a condominium in central Tokyo, a detached wooden house, an investment property, a home you intend to leave vacant for part of the year, or renting an apartment.
In this guide, we’ll walk through how home insurance works in Japan, what renters are actually required to buy, the different types of coverage available, what they can cost, why premiums keep rising, and what happens if you ever need to make a claim.
How Home Insurance Works in Japan
Japan has no single standardized product that perfectly matches what another country might call “homeowners insurance.”
For most homeowners, the starting point is fire insurance, or kasai hoken. Despite the name, modern fire insurance can cover a much wider range of damage, including storms, lightning, water damage, theft, and other risks depending on the policy you choose.
You will normally also need to decide what you are actually insuring.
A policy can cover the building itself, your household belongings, or both.
For a detached house, the building portion generally covers the physical structure and fixtures that form part of the property, while household contents coverage protects belongings such as furniture, appliances, clothing, electronics, and other movable items.
For a condominium, the management association typically insures the common portions of the building, while the individual owner is responsible for the privately owned portion of the unit and, if desired, the belongings inside it.
In Japan, standard earthquake insurance is attached to a fire insurance contract and provides protection for damage caused by earthquakes, volcanic eruptions, and resulting tsunamis.
Coverage amounts and included risks can vary considerably from one policy to another, which is why two people who both say they have “fire insurance” may be protected against very different things.
Is Home Insurance Mandatory in Japan?
Homeowners are sometimes told that fire insurance is legally required in Japan, but that is too broad.
No blanket law requires every person who owns a home in Japan to carry fire insurance.
In practice, however, mortgage lenders commonly require it as a condition of financing. The Japan Housing Finance Agency, for example, requires qualifying fire insurance to remain in place for properties financed through its applicable lending programs.
That means someone purchasing a property with a mortgage may effectively have little choice about whether to insure the building, even though the requirement comes from the financing agreement rather than a general law applying to every homeowner.
Cash buyers can purchase a property without a mortgage lender imposing that requirement, although going without insurance obviously means carrying the financial risk yourself if something happens to the property.
Rental agreements work similarly. Fire insurance is commonly included as a condition of a residential lease, particularly because renter policies can include household contents protection and liability toward the landlord.
Again, the requirement usually comes from the lease rather than a nationwide law requiring every renter to buy a particular policy.
What Does Home Insurance Cover in Japan?
Different parts of the policy respond to different causes of damage, and the cause can be just as important as the damage itself.
A house that burns because of an electrical fault and a house that burns after an earthquake may look exactly the same afterward, but the insurance treatment can be completely different.
Fire Insurance
Fire insurance, or kasai hoken, is the foundation of most residential property insurance in Japan.
The name is somewhat misleading because fire is only one of the risks it can cover. Depending on the insurer and policy selected, fire insurance can provide protection against events such as:
- fire
- lightning
- explosions
- typhoons and wind damage
- hail and snow damage
- certain types of water damage
- flooding
- theft
- accidental breakage or other unexpected damage
Not every policy automatically includes all of these protections. Japanese fire insurance is often customizable, and removing certain risks can lower the premium.
This is particularly relevant for water coverage.
A homeowner living well above ground level in a reinforced-concrete condominium may make a different decision about river-flood protection than someone buying a detached house in a low-lying part of Tokyo.
The Japanese terminology is also useful to understand here.
- 水災 (suisai) generally refers to water-disaster risks such as flooding caused by heavy rain, rivers, storm surge, or related events, depending on the specific wording of the policy.
- 水濡れ (mizunure) refers to a different kind of water damage, such as water escaping from plumbing or leaking from another apartment.
The Japanese government’s Hazard Map Portal can also help you evaluate whether water-disaster coverage makes sense for a particular property.
Flood risk can vary considerably within Tokyo, and the risk to the property also depends on the floor, surrounding elevation, basement areas, parking equipment, and other building features.
Building Coverage and Household Belongings
Fire insurance can generally be arranged for the building, household contents, or both.
Building coverage usually applies to the physical property and permanently installed fixtures.
This can include walls, flooring, built-in kitchens, bathroom fixtures, doors, and other components that form part of the residence.
Household contents coverage applies to the belongings you would normally take with you if you moved.
Furniture, televisions, computers, clothing, movable appliances, and similar possessions generally fall into this category.
This is worth checking particularly carefully when furnishing a higher-value home. Artwork, jewelry, watches, collectibles, or other expensive items may be subject to separate limits, declarations, or exclusions rather than simply being covered in full because you have contents insurance.
If a Fire Starts Next Door
Japan also has an unusual fire-liability rule that can surprise people coming from overseas.
Under Japan’s Act on Liability for Fire Caused by Negligence, someone who accidentally starts a fire is generally not automatically liable for damage caused when that fire spreads to neighboring properties unless gross negligence is involved.
In other words, if your neighbor accidentally starts a fire and it spreads to your home, you should not assume that their insurance will simply pay for everything.
Your own fire insurance may be the protection you need.
The rule dates back more than a century, when Japanese cities contained far more densely packed wooden housing and a single fire could spread across a large area. The practical consequence remains relevant today.
How Much Does Fire Insurance Cost?
There is no particularly useful nationwide “average” for fire insurance because the premium depends heavily on the property and the coverage selected.
Insurers consider factors such as:
- whether the property is a house or condominium
- building construction
- location
- age of the property
- insured amount
- whether household contents are included
- water-disaster coverage
- deductibles
- optional protections
- length of the contract
A relatively limited policy for a reinforced-concrete condominium can cost far less than broad coverage for a detached wooden house with building, contents, water-disaster, and other protections.
As a working benchmark, building and contents coverage for a reinforced-concrete condominium of around 60 square meters in Tokyo commonly falls between ¥20,000 and ¥30,000 per year, while an 80-square-meter detached wooden house often runs between ¥35,000 and ¥55,000 per year, before earthquake coverage is added.
Broad five-year coverage on a detached home, paid up front, can therefore run into several hundred thousand yen depending on the property and options.
Treat these ranges as estimates, not quotes. The premium moves considerably with the deductible, the water-disaster decision, and the insured amounts you select, and premiums across the market have been rising for several years, which we cover in its own section below.
When comparing quotes, make sure you’re comparing the same contract period. One quote may show an annual payment while another shows several years of premium at once.
Residential fire insurance contracts in Japan are now generally limited to a maximum term of five years. Some buyers choose or are offered multi-year arrangements, which can create a surprisingly large insurance payment around the time of purchase if it was not included in the original budget.
Earthquake Insurance
Earthquake insurance is one of the areas where Japan’s system differs most significantly from conventional home insurance overseas.
Ordinary fire insurance generally does not cover damage caused by earthquakes.
That includes more than structural cracking or a building collapsing.
If an earthquake causes a fire, the resulting damage is generally an earthquake-insurance matter rather than an ordinary fire-insurance claim.
The same applies to damage caused by volcanic eruptions and tsunamis resulting from earthquakes or volcanic activity.
Standard earthquake insurance in Japan therefore covers eligible residential buildings and household contents against damage caused by:
- earthquakes
- volcanic eruptions
- earthquake-related fires
- collapse or destruction resulting from earthquakes
- burial caused by earthquake-related events
- tsunamis resulting from earthquakes or volcanic eruptions
Earthquake insurance is not normally purchased as an independent policy. It is attached to a fire insurance contract, although it can generally be added later while an eligible fire-insurance policy is still in force.
Earthquake Insurance Does Not Cover the Full Value of the Home
One of the most confusing parts of earthquake insurance is the amount of coverage available.
Under Japan’s standard earthquake insurance system, the insured amount is generally set at 30% to 50% of the amount insured under the corresponding fire policy.
There are also statutory limits of ¥50 million for a residential building and ¥10 million for household contents.
Suppose your home is insured for ¥20 million under your fire insurance policy.
If you select earthquake coverage equal to 50% of that amount, your earthquake-insurance limit would be ¥10 million.
This does not mean the insurer automatically pays ¥10 million whenever the building suffers earthquake damage.
Japan uses a damage-classification system.
For current policies, earthquake losses are classified into four levels:
| Damage classification | Payout |
|---|---|
| Total loss | 100% of the earthquake insured amount |
| Large half loss | 60% |
| Small half loss | 30% |
| Partial loss | 5% |
Using the ¥10 million earthquake policy above, the corresponding payouts would be ¥10 million for total loss, ¥6 million for large half loss, ¥3 million for small half loss, and ¥500,000 for partial loss.
The classification is based on the prescribed assessment of damage to the insured building or household contents rather than simply reimbursing whatever repair invoice you submit.
This is one reason earthquake insurance can initially look disappointing to foreign buyers. Even after paying for the coverage, you may still have a large gap between the insurance payout and the amount required to completely rebuild or restore the property.
The system was not designed primarily as full replacement-cost insurance.
Its broader purpose is to provide money that can help households rebuild their lives after a major disaster. Earthquake-insurance proceeds are not restricted solely to reconstruction, so the funds can also help with temporary housing, moving expenses, replacing belongings, repairs, or other costs that arise after a disaster.
How Much Does Earthquake Insurance Cost in Tokyo?
Unlike ordinary fire insurance, Japan’s standard earthquake-insurance system makes it easier to provide a meaningful benchmark.
For ¥10 million of earthquake coverage in Tokyo, the current basic annual rate is:
- ¥27,500 for the I-structure category, which generally includes qualifying steel and reinforced-concrete construction
- ¥41,100 for the Ro-structure category, which generally includes wooden and other qualifying construction
Confirm the exact classification of a particular building with the insurer rather than assuming it solely from a property listing.
Qualifying buildings may also receive earthquake-insurance discounts based on their seismic characteristics.
Depending on factors such as construction date, seismic grade, seismic isolation, or qualifying seismic assessment, discounts can range from 10% to 50%.
This can make a substantial difference to the premium.
Earthquake-insurance premiums may also qualify for Japan’s earthquake insurance premium tax deduction for eligible taxpayers, with an income-tax deduction of up to ¥50,000 under the current system.
Is Earthquake Insurance Worth Getting?
The General Insurance Rating Organization of Japan reported that earthquake insurance was attached to 70.4% of new residential fire-insurance contracts in fiscal 2024, the highest level since the statistics began.
That shows how common the coverage has become, but popularity alone does not determine whether it is right for a particular property owner.
A better way to think about earthquake insurance is to ask how financially disruptive a major earthquake would be for you.
Someone with a large mortgage, limited cash reserves, and a detached home may value the additional protection differently from someone who owns a highly earthquake-resistant condominium outright and has substantial savings.
If an earthquake destroys a mortgaged home, the mortgage debt does not disappear with the building. A homeowner could potentially be left paying the existing loan while also needing money for repairs, temporary accommodation, or another home.
You may also want to consider the value of the belongings inside the property. Earthquake coverage can be taken out for eligible household contents as well as the building, which can be particularly relevant for renters or condominium residents whose structural exposure is different from that of a detached-home owner.
Household Contents Insurance
Household contents insurance is sometimes discussed as though it were a completely separate category of Japanese home insurance, but it is more accurate to think of the contents as a separate insured object within your fire and earthquake coverage.
You can insure the building without insuring the contents, the contents without the building, or both where appropriate.
For homeowners, contents insurance can cover the belongings inside the home against selected risks under the fire policy.
For renters, it is often the more important property coverage because the tenant does not own the building itself.
The value can add up faster than many people expect.
Replacing beds, sofas, appliances, televisions, computers, clothing, cookware, and all the other possessions accumulated in a home can quickly become a substantial expense even before particularly valuable items are considered.
Earthquake contents coverage operates differently from an ordinary fire or theft claim. Rather than reimbursing every damaged possession individually, earthquake claims are assessed under the earthquake-insurance damage system.
Someone purchasing a high-value home or furnishing it extensively should therefore look carefully at both the overall contents limit and any special limits applying to particularly valuable possessions.
Personal Liability and Other Optional Coverage
Property damage is not always limited to your own home.
This is especially relevant in condominiums.
Suppose a washing-machine hose or plumbing connection fails in your unit and water damages the ceiling, flooring, furniture, or electronics in the apartment below.
Repairing your own unit is only one part of the problem. You may also face liability for damage caused to someone else’s property.
Personal liability coverage can protect against certain situations where you become legally responsible for accidentally injuring another person or damaging their property.
Renters may also encounter tenant liability coverage, often called shakuyanin baisho sekinin (借家人賠償責任), which addresses the tenant’s responsibility toward the landlord for damage to the rented property.
Other options offered with home policies may include accidental breakage, theft, temporary accommodation expenses, additional repair-related expenses, or other insurer-specific protections.
These are not necessarily worth adding in every case. The important thing is to understand which losses you are willing and able to pay for yourself and which could create a financial problem large enough to justify insuring.
Insurance Requirements for Renters in Japan
When you sign a lease in Japan, the real estate agency will almost always require proof of insurance before handing over the keys, and will usually present a specific policy to sign at the same time.
A typical renter policy includes household contents coverage, tenant liability coverage and personal liability coverage.
The agency’s designated policy typically costs somewhere around ¥15,000 to ¥20,000 for a two-year term.
What many renters do not realize is that the designated policy is often a requirement of convenience rather than an absolute condition. In most cases, the lease requires you to carry insurance meeting certain minimums, commonly tenant liability of around ¥20 million and repair-cost coverage of a few million yen, rather than requiring one specific insurer.
If you find comparable coverage at a lower price, you can often enroll on your own and submit the enrollment certificate to the agency instead.
Some agencies do insist on their own policy, and some leases are written so that the designated policy is genuinely a condition of the tenancy. Read the lease wording and ask the agency directly before assuming either way. Where substitution is allowed, the savings over several renewal cycles can be meaningful, and you gain the freedom to choose an insurer that offers English support.
If a fire you accidentally cause spreads to neighboring units, you are generally not liable to those neighbors unless gross negligence is involved, but you remain fully responsible to your own landlord under the lease. Tenant liability coverage exists precisely for that situation, which is why no agency will let you move in without it.
Commercial insurers are not the only option for household coverage in Japan.
Japan’s cooperative insurance providers, known as kyosai (共済), offer household coverage that is often noticeably cheaper than a comparable commercial policy.
The best-known are the prefectural co-ops, called Kenmin Kyosai in most prefectures and Tomin Kyosai in Tokyo, along with CO-OP Kyosai, which operates through the consumer co-op network.
Kyosai products follow a mutual-aid model with simple, standardized plans and low premiums, and some return a portion of surplus premiums to members at the end of the year.
However, coverage limits tend to be lower, the range of optional protections is narrower, and enrollment, documentation, and claims handling are almost entirely in Japanese. Kyosai plans tend to suit renters and owners insuring contents or modest properties better than owners of large detached homes who want broad, customized coverage.
If your priority is minimizing cost and you can handle Japanese paperwork, or you have someone who can handle it for you, a kyosai quote is worth obtaining before you commit to a commercial policy.
Can Foreigners Get Home Insurance in Japan?
Foreigners can obtain home insurance in Japan, and being a non-Japanese citizen does not by itself prevent you from insuring residential property.
The practical experience can vary depending on whether you live in Japan or own the property from overseas.
For residents, the process may be relatively straightforward, particularly when the policy is arranged through the real estate company, mortgage lender, insurance agent, or another party involved in the purchase.
The bigger obstacle is often language, not eligibility.
Policy documents, coverage explanations, claims forms, and correspondence may be provided primarily in Japanese. Some insurers and agencies offer English-language assistance, while others expect much of the process to be handled in Japanese.
A handful of providers and intermediaries serve the English-speaking market directly.
AIG and Chubb both offer property coverage with English-language support in Japan, and agencies and brokers that work specifically with foreign residents, such as TRINITY and Novari, can arrange and explain policies in English.
Offerings change over time, so confirm current products and English claims support directly, but starting with providers set up for English service can save considerable friction if you ever need to file a claim after a fire or a burst pipe.
This is worth considering when comparing policies.
The cheapest quote may not necessarily be the most convenient policy if you would struggle to communicate with the insurer after a serious fire, water leak, or earthquake.
The situation can become more complicated for nonresident property owners.
Some insurers may have requirements regarding contact information in Japan, payment methods, representatives, or the way the property is being managed. These requirements vary, so confirm them directly with the insurer or broker rather than treating them as universal rules.
How the property is used can also affect the insurance available.
A property occupied as your primary residence may not be treated in exactly the same way as a long-term rental property, second home, frequently vacant home, or short-term accommodation business.
If you are purchasing property from overseas, it is worth confirming who will handle communication with the insurer if something happens while you are outside Japan.
For investment properties, this may be the property manager. For an occasional-use second home, you may need a different arrangement.
These details are easy to overlook when choosing the policy but can become considerably more important once there is an actual claim.
What Happens If You Need to Make a Home Insurance Claim in Japan?
The exact procedure varies by insurer and type of damage, but most claims follow a similar sequence.
Document the Damage
Once everyone is safe and you’ve taken any urgent measures to prevent further damage, document the property before making unnecessary repairs or disposing of damaged items.
Take clear photographs and video from several angles.
For a contents claim, keep a record of damaged belongings. Receipts, photographs taken before the incident, warranties, purchase records, and other evidence of ownership or value may also be useful.
If emergency work is necessary to prevent additional damage, keep invoices and records of what was done.
Contact the Insurer or Agent
Notify the insurer or insurance agent as soon as reasonably possible.
You will normally need to explain what happened, when it happened, and which parts of the property were affected.
The cause of the loss is important.
A fire after an electrical fault, water entering after a typhoon, a leaking pipe, and a fire caused by an earthquake can each lead to different parts of the policy.
For foreign homeowners, having an English-speaking agent, bilingual support, or a trusted property manager can make the process much easier.
Provide the Required Documents
Depending on the claim, the insurer may request photographs, repair estimates, receipts, proof of ownership, reports, or other documentation.
Larger claims may require an inspection or formal damage assessment before the insurer determines how much will be paid.
Earthquake insurance has its own assessment rules because payment depends on whether the damage qualifies as total loss, large half loss, small half loss, partial loss, or falls below the required threshold.
This assessment should not be confused with a municipal disaster victim certificate, or risaishomeisho (罹災証明書).
A local government’s classification of disaster damage and an insurer’s earthquake-insurance assessment serve different purposes, so the labels do not necessarily have to match.
Claim Approval and Payment
Once the insurer has received the necessary information and completed any required investigation, it determines whether the loss is covered and the amount payable.
General non-life insurance terms commonly provide for payment within 30 days after the claim process is complete, although additional investigation can extend the timeframe in more complicated cases.
A major regional disaster can also affect the practical timeline simply because insurers may be handling a very large number of claims at once.
Be Careful With Companies Offering to “Handle” Your Insurance Claim
One other issue is worth knowing about, particularly after typhoons, earthquakes, and other large disasters.
The General Insurance Association of Japan has repeatedly warned consumers about repair companies and claims-support businesses approaching homeowners with promises such as:
“Your insurance will pay for the repairs.”
“We can handle the insurance claim for you.”
“You can repair your house for free using your insurance.”
Some of these arrangements can involve high fees, cancellation penalties, unnecessary work, or problems with the insurance claim itself.
If you believe damage may be insured, contacting your insurer or authorized insurance agent first is generally the safer place to start.
Protecting Your Home in Japan
Insurance is only one part of protecting a property in Japan.
The building’s construction, age, seismic performance, location, flood exposure, management, and intended use all influence the risks you are taking on long before you choose an insurance policy.
The best insurance policy is therefore not necessarily the one with every possible option or the lowest premium. It is the policy that covers the losses you cannot comfortably absorb yourself while fitting the property you actually own.
At Tokyo Portfolio, we help international buyers navigate the wider process of buying and owning property in Tokyo, from finding the right home or investment property to understanding the practical considerations of ownership in Japan.
If you are considering buying property in Tokyo, contact our team to discuss what you are looking for and how we can help.
