Risk Dictionary › 私道負担

Private Road Obligation

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What it means

In Japan, roads can be publicly owned (公道) or privately owned (私道). When a property's access road is a private road, the owners of the surrounding properties typically own a share of it. 私道負担 means part of the land you are buying is actually private road — land you own but cannot build on and must keep accessible to others.

Listings will often state something like 私道負担あり・○○㎡, meaning the property includes X square metres of private road land. The listed land area includes this portion, so the actual buildable area is smaller than it appears.

Why it matters

• Reduced buildable area — the private road portion cannot be built on. Your effective lot is smaller than the stated 土地面積.
• Maintenance costs — private road repairs and resurfacing are shared among co-owners. Disputes are common when owners disagree on repairs.
• No public maintenance — the municipality will not repair a private road. All costs fall on the co-owners.
• Access rights complications — check whether there is a formal 通行地役権 (easement) agreement allowing access, or whether access relies on informal consent that could be revoked.
• Utility works — digging up the private road for water, gas, or sewer connections requires consent from all co-owners, which can be difficult to obtain.

What to confirm before buying

1. Exact area of the private road portion and how it is registered in the 公図.
2. Who are the co-owners of the private road? Are there any disputes or uncontactable owners?
3. Is there a written access and maintenance agreement (通行・掘削承諾書) in place?
4. Has the private road been designated as a 42条2項道路 (building-standards road)? If so, setback may be required.
5. What is the road's surface condition and when was it last repaired?

Questions to ask the agent (Japanese)

Official source

Road classification and building rights are governed by the Building Standards Act (建築基準法第42条). Access easement rights are registered under the Civil Code (民法第280条). Confirm road designation status with the relevant 役所 道路管理課.

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