Repairs Keep Surfacing After You Buy a Kominka — The Information Gap Born of Inheritance and Aging
A newcomer who bought an old house in the mountains of Nara found, only after moving in, a well that ran dry for two months, mold, and drainage failures. Japan holds 9.002 million vacant homes at a 13.8% vacancy rate, and 80.9% of vacant detached houses are the neglected kind. Repairs surfacing after purchase are the consequence of a three-layer information gap: disclosure that stops at whether facilities exist, sellers who do not know the condition amid inheritance and aging, and vacant-house banks that, even among households that resolved a vacant home, are used by only 3.3%.
TL;DR
- A newcomer who bought an old house found, only after moving in, a well that ran dry for two months, mold, and drainage failures
- Japan holds 9.002 million vacant homes at a 13.8% vacancy rate, and 80.9% of vacant detached houses (2.85 million) are the neglected kind
- Repairs surfacing after purchase come from a three-layer gap—disclosure range, sellers' ignorance, and unreached vacant-house banks—that has not kept pace with inheritance and aging
Repairs surfacing after purchase are not a matter of individual dishonesty. Disclosure stops at whether facilities exist, sellers themselves do not know the condition amid inheritance and aging, and official channels reach only a sliver of actual properties. Three layers have failed to keep pace with the reality of vacant homes.
What Is Happening
A newcomer in Nara found a dry well and mold only after moving in; 80.9% of vacant detached houses are neglected, and buyers face this stock
In the mountains of Nara Prefecture, a woman in her thirties bought an old house and moved in with her husband. As FIRST-HAND Local reports from the field, after the move the well ran dry for two full months, and she bathed at an acquaintance's home. Damp brought mold, and drainage failures surfaced little by little through daily use. Re-digging the well cost on the order of a million yen, and clearing grass costs hundreds of thousands of yen each year. None of it showed at the pre-purchase viewing; the need for repairs appeared only once she lived there.
This is not this newcomer's misfortune alone. Japan holds 9.002 million vacant homes, at a vacancy rate of 13.8%, both record highs. And narrowing to vacant detached houses, the kind closest to an old house, 80.9% (2.851 million) of the 3.523 million are "other vacant houses", neither for rent nor for sale, that is, long neglected. What a buyer faces is this pile of neglected homes.
Background & Context
Disclosure stops at whether facilities exist, sellers often do not know the condition, and warranty protection misses private sales
Why do the flaws show only after buying? One reason is that the law's disclosure range is narrow. The Building Lots and Buildings Transaction Business Act requires explaining, at sale, whether facilities for drinking water and drainage exist, but not the performance or reliability of whether that well keeps water or that drainage keeps working. An inspection of an existing building's condition, too, only requires disclosing whether one was done; doing it is voluntary. On top of that, the rule that protects a seller's liability for defects after handover for a set period applies only when the seller is a real-estate agent. Many inherited vacant homes are sold by individuals, and this protection does not reach them.
Sellers, for their part, often do not know the property's condition. About 60% (57.9%) of vacant homes are acquired by inheritance. Among those inherited homes, just under 60% (58.3%) were triggered by the owner's death. Households that made any preparation before inheriting come to only 23.0%. Many owners live far away and are elderly. Rather than hiding things in bad faith, the seller too does not grasp the lived condition.
The title itself, too, is often unsettled. Registration of inherited real estate became mandatory in April 2024, with a fine of up to 100,000 yen for failing to apply within three years of learning of the acquisition, but the longer a property has been left, the more heirs pile up across generations, and who can sell it grows unclear.
Reading the Structure
Even among households that resolved a vacant home, only 3.3% used a bank; this reads the three-layer gap behind post-purchase repairs
The mechanisms meant to fill the information gap barely reach actual properties either, and their base is narrower than it looks. In a given year, the households that actually resolve a vacant home are only a fraction of those that own one. And even among those that did resolve one, only 3.3% did so through a vacant-house bank, while 38.7% resolved it with no particular action taken. The national vacant-house bank has 1,144 participating municipalities, but only 741 actually list properties, and cumulative deals since its launch come to about 25,600. Given that 2.85 million neglected vacant houses exist, official channels touch only a sliver.
Here three layers come into view, one over another. The law stops at disclosing whether facilities exist and does not reach their performance or reliability. The seller lets the property go without knowing its condition, amid inheritance and aging. And the official distribution channel connects to only a fraction of actual properties. That repairs keep surfacing after purchase is the consequence of these three layers failing to keep pace with the reality of vacant homes, where inheritance and aging advance.
Measures to encourage migration and the use of vacant homes are spreading. But a piecemeal fix, such as slightly thickening the disclosure of key matters, will not fill this gap. How can a property left dormant with titles unsettled by inheritance be made visible before a transaction? Who investigates the condition, who conveys it to the buyer, who puts it into distribution? Leave that allocation undecided, and a vacant home, a regional resource, keeps sleeping as a negative legacy. What resolves the structure of repairs surfacing after purchase is not a tweak to the duty of disclosure, but the design of a mechanism that draws the real condition out ahead of the transaction.
Further Reading
- 老いる家 崩れる街 住宅過剰社会の末路 (Aging Houses, Crumbling Streets: The End of an Over-Housing Society) (Chie Nozawa, Kodansha Gendai Shinsho, 2016) — a study of the over-housing society, where vacant homes rise even as land development and tower blocks keep going, read from the side of institutions. (In Japanese.)
References
2023 Housing and Land Survey: Summary of Basic Tabulation on Housing and Households — Statistics Bureau, Ministry of Internal Affairs and Communications. Ministry of Internal Affairs and Communications
2024 Survey of Vacant House Owners: Report — Housing Bureau, Ministry of Land, Infrastructure, Transport and Tourism. Ministry of Land, Infrastructure, Transport and Tourism
Current Status of the National Vacant House and Land Bank (Participating Municipalities and Deals) — Ministry of Land, Infrastructure, Transport and Tourism. Ministry of Land, Infrastructure, Transport and Tourism
On the Mandatory Application for Inheritance Registration — Civil Affairs Bureau, Ministry of Justice. Ministry of Justice
