孤独死
kodokushiこどくし
Lonely death
A person living alone who dies at home and is not found for some time. No statute defines the term and no statistic counts exactly it. The closest public measure is the police count of people living alone who died at home, which does not itself require any delay in discovery: 76,941 such deaths in 2025, out of 204,562 bodies handled in all[1]. The delay is the part that matters to a property, and the police publish that separately: of those 76,941, 22,222 were found eight days or more after death, and 7,148 after a month or more[2]. A lonely death is not automatically disclosable. What changes the answer is exactly that delay: if the body went undiscovered long enough that specialist cleaning or major renovation was needed, the ministry guideline treats the case as material even though the death itself was natural[3].
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Sources
- [1]National Police Agency (警察庁), 令和7年中における死体取扱状況(警察取扱死体のうち、自宅において死亡した一人暮らしの者)について
- [2]National Police Agency (警察庁), 警察取扱死体のうち、自宅において死亡した一人暮らしの者(令和7年)年齢階層別・経過日数別
- [3]Ministry of Land, Infrastructure, Transport and Tourism (国土交通省), 宅地建物取引業者による人の死の告知に関するガイドライン (October 2021)
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