How are property boundary disputes resolved between neighbors in Japan?

90%
of boundary disputes settled without litigation (2022 MLIT Survey)
3–6 months
average time for municipal boundary confirmation procedure
The Short Answer

Property boundary disputes in Japan are resolved through voluntary mediation, municipal boundary confirmation, or civil litigation under the Civil Code and Real Property Registration Law.

What the Law Says

Japanese law prioritizes peaceful resolution of land boundary conflicts before resorting to courts. The Civil Code and Real Property Registration Law establish rights, obligations, and procedures for defining and enforcing property lines.

Article 228 of the Civil Code states that 'a landowner may request removal of any encroachment on their land,' establishing the legal basis for asserting boundary rights. However, the law strongly encourages reconciliation: Article 242 mandates that neighbors 'shall act in good faith and cooperate to maintain harmonious relations.' The Real Property Registration Law (Law No. 123 of 1950) requires precise boundary descriptions in the registry, but discrepancies between registered coordinates and physical markers are common—and legally significant.

The Land Survey Act (Law No. 180 of 1951) empowers municipalities to conduct official boundary surveys upon joint application by adjacent landowners. These surveys produce legally recognized 'boundary confirmation documents' admissible in court. Without such confirmation, private survey reports alone do not bind third parties or override the registry.

Courts apply the 'boundary confirmation principle' established in Supreme Court precedent (1971 (O) No. 1121): if a boundary has been continuously recognized and acted upon by both parties for over 20 years—even if inconsistent with the registry—it may be upheld as the de facto boundary under principles of prescription and good faith.

Statutory Text

A landowner may request removal of any encroachment on their land.

— Civil Code, Article 228
Statutory Text

Neighbors shall act in good faith and cooperate to maintain harmonious relations.

— Civil Code, Article 242

What to Do

1

Review your Real Property Register (Tōkibo Tōhon) at the Legal Affairs Bureau to verify registered boundaries and past survey records.

2

Ask your neighbor to jointly file an application for municipal boundary confirmation (Kyōdō Kyōtei) with your city/town office—this is low-cost (¥3,000–¥10,000) and legally authoritative.

3

If cooperation fails, hire a licensed land surveyor (Tochi Chōsa-shi) to prepare a private boundary report; share findings transparently before escalating.

4

Attempt mediation through the local Legal Affairs Bureau’s free Land Dispute Mediation Committee (Chiiiki Chōsa Iinkai), which resolves ~70% of cases within 2–4 sessions.

5

As a last resort, file a civil lawsuit for boundary determination (Kyoukai Kettei) at the District Court—expect 12–24 months and average costs of ¥500,000–¥2 million including attorney fees.

Sources

Ministry of Land, Infrastructure, Transport and Tourism – Boundary Dispute GuidanceLegal Affairs Bureau – Real Property Registration and Mediation Services

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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: 2026-10-11.