Short answer: The name printed on a Japanese property's registry (登記簿) is not automatically the person with the legal right to sell it to you today. Since April 1, 2024, heirs have been legally required to register an inherited property in their own name within three years. Since April 1, 2026, every registered owner has also been required to update their address or name on the registry within two years of moving or changing it. Both duties are new, both are retroactive, and a huge share of akiya predate both — because most akiya became vacant precisely when an elderly owner died and nobody got around to the paperwork. Before you get attached to a listing, ask who is actually named on the registry and how that name connects to whoever signs your contract.
This is not a niche edge case for the akiya market — it is close to the median case. MLIT's most recent nationwide survey of akiya owners (令和6年空き家所有者実態調査, results published August 29, 2025) found that roughly six in ten vacant houses currently on the market were acquired by inheritance rather than purchase. More than seven in ten of those inherited akiya were built before 1980, and about six in ten became vacant specifically because the previous owner died. Only around two in ten households had done anything at all — even just talking with the person who would become the deceased — to plan for the property before the inheritance actually happened.
Put together: the typical akiya is an old house that became vacant on a death, inherited by people who mostly did no advance planning. That is exactly the profile the 2024 and 2026 registration laws were written for. It does not mean a given listing has a problem — but it means you should not assume it doesn't just because the listing looks ordinary.
Japan's real estate registry records whoever last filed a change — it does not update on its own when someone dies or moves. Until April 2024, nothing legally forced an heir to record a change of ownership after a death. Until April 2026, nothing forced an owner to update their address after moving house. Multiply that by decades of rural depopulation, and the result is what Japanese policy documents call 所有者不明土地 ("owner-unknown land"): parcels where the registry alone cannot tell you who currently holds the rights. A government research group's widely cited 2017 estimate put the total area of such land at around a fifth of Japan — more area than the entire island of Kyushu — and projected it would keep growing without a legal fix.
According to Japanese government policy materials on the reform, unregistered inheritance accounts for roughly 63% of owner-unknown-land cases and an unregistered change of the owner's address or name accounts for roughly 29% — which is why the fix arrived as two separate mandatory duties rather than one.
| Duty | 相続登記 (inheritance registration) | 住所等変更登記 (address/name change registration) |
|---|---|---|
| Who it applies to | An heir who acquires real estate through inheritance | Every registered owner, individual or corporate |
| In force since | April 1, 2024 | April 1, 2026 |
| Deadline | 3 years from learning of both the inheritance and the ownership | 2 years from the address or name change |
| Applies to past cases? | Yes — inheritances before April 2024 must be registered by March 31, 2027 at the latest | Yes — changes before April 2026 must be registered by March 31, 2028 at the latest |
| Penalty for unjustified non-compliance | Fine (過料) of up to ¥100,000 | Fine (過料) of up to ¥50,000, issued only after the registrar sends a formal notice |
| Simplified relief option | 相続人申告登記 (heir report registration) — meets the basic duty without full agreement among co-heirs; a registration-tax exemption also applies to small-value land and re-inherited property, currently through March 31, 2027 | スマート変更登記 (Smart Change Registration) — pre-register search-linkage information and the registrar can update the address automatically via database matching |
Sources: Ministry of Justice, 相続登記の申請義務化について; Ministry of Justice, 住所等変更登記の義務化.
The scenario that actually stalls akiya deals is rarely a single missed deadline — it is a chain of them. If an owner died in, say, 2005 and nobody registered the inheritance, and the heir who should have inherited then also died before doing anything about it, the property can pass through a second, unregistered inheritance (数次相続, "sequential inheritance") before anyone deals with it. Each unregistered death adds more potential heirs — children, then grandchildren, then siblings and cousins if a generation had no direct descendants.
Under Japanese civil law, real estate inherited by more than one person is jointly owned (共有) until the heirs sign an estate division agreement (遺産分割協議書) or otherwise formally divide it. A sale generally needs every co-owner's consent. On an old rural akiya that sat through two unregistered generations, "every co-owner" can mean a dozen or more relatives scattered across the country, some of whom may not even know they hold a share. This is why some very cheap, seemingly attractive akiya listings quietly sit unsold for years, or why a deal that seemed close can stall for months once the agent starts actually confirming signatures.
To be clear about what this does and does not put at risk: a Japanese judicial scrivener (司法書士) checks the registry as a routine part of closing, so an invalid transfer should not complete without anyone noticing. The realistic risk for a buyer — especially one coordinating an overseas purchase around flights, translation and a limited trip — is time and momentum: discovering this late can mean months of delay while heirs are located and agree, or the property being withdrawn from the market entirely while that happens. Finding out early is a scheduling decision, not just a legal one.
You do not need to wait for the agent to volunteer this. Three documents do most of the work:
| Document | Japanese | What it tells you | How to get it |
|---|---|---|---|
| Certificate of registered matters | 登記事項証明書 | The current registered owner's name and address, plus the recorded history of past owners and any mortgages | Any Legal Affairs Bureau (法務局) counter or by mail, for a few hundred yen; viewable online for less through the 登記情報提供サービス (Touki Joho Teikyo service) |
| Legal heir list certificate | 法定相続情報一覧図の写し | A Legal Affairs Bureau-certified list of everyone legally recognized as an heir, built from koseki (family register) records — evidence that all heirs have been identified, not just the one signing | Free, issued by the Legal Affairs Bureau to an heir who applies with the koseki records; a copy is reissuable free within 5 years of certification. Ask the seller's side to provide theirs |
| Estate division agreement | 遺産分割協議書 | Signed proof that all co-heirs agreed on who gets the property, when there is more than one heir | Held by the seller or their scrivener; ask to see it, or ask your own judicial scrivener to confirm it exists, before any non-refundable payment |
The Real Estate Information Library (reinfolib.mlit.go.jp), which is useful for cross-checking zoning and past transaction prices for an address, does not show current registered ownership — it is not a substitute for pulling the certificate above.
| Japanese | English |
|---|---|
| この物件はすでに相続登記が完了していますか。登記簿上の名義人はどなたですか。 | Has the inheritance registration already been completed for this property? Whose name is on the registry? |
| 相続人は何人いますか。全員が売却に同意していますか。遺産分割協議書はありますか。 | How many heirs are there? Have they all agreed to the sale? Is there an estate division agreement? |
| 相続人申告登記のみで、まだ本登記は済んでいませんか。 | Has only the simplified heir-report registration been filed, without the full registration yet? |
| 登記事項証明書を確認させていただけますか。 | May I see the certificate of registered matters? |
| 所有権移転の登記手続きはどなたが担当されますか（司法書士のお名前）。 | Who is handling the ownership-transfer registration (which judicial scrivener)? |
This sits alongside a different kind of registry problem — a building or extension that was never registered at all (未登記), which changes the floor area on paper rather than who owns it — covered in our guide to 10 red flags in a Japanese akiya listing. It's also worth reading alongside what a seller must disclose and whether foreign nationality affects any of this — it doesn't: an unclear registry slows down a sale to anyone, Japanese buyers included, and none of the rules above are different for a foreign buyer.
Want a second data point before you email an agent? Start with the free 12-point akiya risk checklist. If you already have a specific listing in mind, a $49 risk report pulls the official zoning, hazard and transaction data for that exact address into one report, with the questions to send the agent — including the registry questions above, which are worth asking in writing before anything else.
Yes, but not directly from that name. Whoever is selling — usually one or more heirs, or an agent acting for them — must first complete the inheritance registration (相続登記) in the name of the actual heir or heirs, or at least resolve who is legally entitled to sign, before a valid transfer to you can be registered. Ask the agent directly whether the inheritance registration is complete, and if not, at what stage it is.
Order a toki jiko shomeisho (登記事項証明書, certificate of registered matters) for the specific lot and building. Anyone can request one at a Legal Affairs Bureau (法務局) counter or by mail for a few hundred yen, or view one online through the Touki Joho Teikyo service for less. It lists the current registered owner's name and address and the history of past owners. Compare that name to whoever is named as the seller in your contract.
Sozokunin shinkoku toki (相続人申告登記) is a simplified filing introduced alongside the 2024 law. It lets one heir notify the registry that they are an heir and satisfy their own basic registration duty without first getting every co-heir to agree on how to divide the estate. It stops the fine, but it is not a completed transfer of ownership — the registry will show that person as an heir, not necessarily as the confirmed sole owner able to sell without further paperwork. Ask whether the property has gone through full inheritance registration or only this simplified filing.
Real estate inherited by more than one heir is jointly owned (共有) under Japanese civil law until they sign an estate division agreement (遺産分割協議書) or otherwise formally divide it, and a sale generally needs every co-owner's consent. This is common on akiya that passed through more than one death without anyone registering (数次相続), sometimes leaving a dozen or more distant relatives as co-owners. If the agent cannot confirm in writing that all co-owners agree to sell, treat the timeline as uncertain and ask to see the estate division agreement before making any non-refundable payment.
No. The report is built from public zoning, hazard and transaction datasets plus the listing text itself; it does not pull a registered-matters certificate for the specific lot, which is what shows the current registered owner's name and history. Confirming who is legally able to sell you a specific property is a manual step — order the certificate yourself, or ask the agent or a judicial scrivener (司法書士) to confirm it before you pay a deposit.
Have a specific listing in mind? Get the official zoning, hazard and transaction data for that exact lot — plus the questions to send the agent — in one report.
Get a $49 risk report Free 12-point checklistThis guide is general information based on public sources cited above. It is not legal, tax, or real-estate brokerage advice. Confirm every item for a specific property with the agent, the municipality, a judicial scrivener, and other licensed professionals.