JapanProperty sold twice - which buyer is owner?
In Japan, the buyer who first completes registration of ownership at the Legal Affairs Bureau becomes the legal owner — even if another buyer purchased earlier but failed to register.
What the Law Says
Japanese law treats real property ownership as a matter of public registration — not mere contract or payment. The Civil Code establishes that registration is mandatory to assert ownership against third parties, and determines priority when property is sold twice.
Under Japanese law, a sale contract alone does not transfer legal ownership of land or buildings. Ownership only passes to the buyer once the transfer is registered in the Real Property Register at a Legal Affairs Bureau.
If the same property is sold to two different buyers, the one who completes registration first acquires full legal ownership — regardless of who signed the contract earlier or paid first. The later registrant prevails, and the earlier (unregistered) buyer has only a personal claim against the seller — not a right to the property itself.
This rule protects transactional certainty and allows third parties to rely on the public register. Without registration, a buyer cannot enforce ownership rights against anyone other than the seller.
Statutory TextRights in rem over immovables may not be asserted against third parties unless the same have been registered.
— Civil Code, Art. 177 — Effect of Registration
What to Do
Immediately after signing the sales contract, instruct your judicial scrivener (shiho-shoshi) to prepare and file the registration application.
Confirm with the Legal Affairs Bureau that registration has been completed — look for the official registration certificate (tokibo shomeisho).
Do not assume ownership is secured by payment, possession, or contract alone — only registration creates enforceable ownership.
If you discover the property was sold twice, check registration records first: the registered owner is the legal owner under Art. 177.
If you are the unregistered buyer, consult a lawyer promptly — you may have a claim for damages or rescission against the seller, but not for the property.
Sources
Not legal advice. This article is general information based on publicly available sources, written for educational purposes. Laws change and individual situations vary. Consult a licensed attorney in your jurisdiction before acting on anything you read here. Last reviewed: 2026-06-08.