Short answer: yes, you can buy a house that fronts a private road (私道), and many ordinary Japanese neighbourhoods are built that way. The risk is not that the road is private. It is that you may (a) pay tax or share costs on a strip of road you cannot build on, (b) depend on neighbours' written permission to cross or dig up the road for water, gas and sewer pipes, and (c) find that the road does not qualify as a legal road at all, which means the house may fall under the no-rebuild rules. Three documents settle most of this before you pay a deposit: the registry certificate for the road land, the municipality's road designation papers, and signed passage-and-excavation consent. A $49 Akiya Check report flags the zoning and road-related data for the exact lot; the free checklist lists the questions to send the agent.
Share-ready key points
In Japan "road" is a legal category, not just a strip of asphalt. Under the Building Standards Act (建築基準法), a house can only be built on land that touches a road as defined in Article 42, and Article 43 requires the lot to be in contact with that road for at least 2 m. Public roads are owned and maintained by the national government, prefecture or municipality. Private roads are owned by individuals or companies, often the households that live along them. Several kinds of private road can still be legal roads:
| Term in the listing | What it usually means | What to check |
|---|---|---|
| 位置指定道路 (ichi shitei doro) | A private road for which the local building authority has issued a designation under Art. 42(1)(v). Common in subdivisions built by developers | The designation papers (指定道路図・指定道路調書) and whether the road is still in the form that was approved |
| 2項道路 (nikō doro) / みなし道路 | An older narrow lane treated as a road under Art. 42(2); new buildings must usually be set back so that the lane reaches 4 m in width (セットバック) | Whether the lot will lose land to the setback and who owns the setback strip |
| 私道負担あり | Part of the lot area on the listing is road. You own, or co-own, that part | The size of the road part, whether it is included in the stated price per square metre, and the ownership share |
| 私道（持分なし） | The road is owned by someone else and you have no share | Written permission to pass and to dig, from all owners; who maintains the surface |
| 通行承諾・掘削承諾 | Consent to pass over, and to excavate for pipes under, the private road | That the letters exist, cover your lot, and bind future owners |
For the setback rule see our guide on saikenchiku-fuka (no-rebuild) lots, which also explains what happens when a lot does not touch a legal road. A reference explaining the designation papers for position-designated roads is, for example, Sendai City's building guidance handbook (Japanese PDF); every building authority keeps its own register of designated roads.
Because each local authority applies these rules in its own way, treat the pages above as examples of how to read your municipality's version, not as the rule everywhere.
A house on a private road needs water, drainage and often gas pipes to run under the road to reach the public mains. Rebuilding, renewing a pipe or connecting a new bathroom can require excavation. Agreements that only say "you may pass" (通行承諾) do not automatically allow digging (掘削承諾). Before you rely on a consent letter, check four points: it is signed by every owner of the road (or by a representative with authority), it covers pipe installation, repair and replacement, it states whether passage and digging are free of charge, and it is written to bind the successors of the signers. A letter signed by a previous neighbour who has since sold may be worth little. Our guide to questions to ask the agent has the wording to request.
When the listing says 私道負担あり, a part of the stated lot area is the road. Ask for the area in square metres, and calculate the usable area separately. If the registry certificate for the road land shows several co-owners (共有), you may be buying a fractional share and becoming jointly responsible for repairs. Some municipalities exempt public-use road land from fixed asset tax, but only if the use meets their criteria and the owner applies. Ask the seller for the latest tax notice (固定資産税納税通知書) and whether the road part is listed as non-taxed. The broader cost picture is in our guide to fixed asset tax and acquisition costs.
A lane that looks like a street can fail to meet Art. 42. Common problems are a lane narrower than 4 m with no setback agreement, a position-designated road that was later altered (a building built over the approved line, or a dead end made longer), and a road whose designation papers cannot be found. If the house itself was built before the current rules, you can usually keep living in it, but rebuilding may be restricted. If the road is only an agreement between neighbours with no legal designation, ask the building authority what status it has. The result decides whether a bank or insurer is comfortable, and whether the next buyer can rebuild.
No official statistics cover these, so ask for written quotes rather than relying on generic numbers. The items that can create cost are:
Not sure whether the road is legal? An Akiya Check report pulls zoning and road-related data for the exact lot and lists the questions to send the agent. If you only want the basics first, start with the free checklist.
Get a $49 risk report Get the free 12-point checklist| Japanese | English |
|---|---|
| 前面道路は公道ですか、私道ですか。私道の場合、位置指定道路ですか。 | Is the front road public or private? If private, is it a position-designated road? |
| 私道の所有者と持分を教えてください。この物件に持分はありますか。 | Who owns the private road, and in what shares? Does this property include a share? |
| 通行承諾書と掘削承諾書はありますか。全所有者の署名があり、承継人にも効力が及びますか。 | Are there passage and excavation consent letters? Are they signed by all owners and binding on successors? |
| 上下水道・ガスの配管は私道の下を通っていますか。 | Do the water, sewer and gas pipes run under the private road? |
| 私道の維持管理費や修繕費の負担はありますか。 | Are there maintenance or repair costs for the private road? |
Yes. Nothing in the road rules depends on your nationality. The same Building Standards Act and Civil Code rules apply to every buyer. Our guide on whether foreigners can buy akiya covers the wider question.
Do not buy on the assumption you can force it. The Civil Code gives limited statutory rights (Arts. 210, 213-2) that require notice and compensation, and disputes are resolved case by case. Make the signed consent a condition of the contract, or ask a lawyer who handles real estate disputes.
It depends on the municipality. Some exempt land used as a public-access road if the owner applies and the criteria are met (Osaka and Kobe publish theirs). Ask the seller for the current tax notice and the municipality's tax office for the status of the road part.
It can, if the road status raises doubts about rebuilding. Ask the insurer and, if relevant, the lender early. Our guide to fire insurance for akiya lists what insurers ask for.
See no-rebuild lots, land boundary surveys, urbanization control areas and how to check a house in Japan before buying, or browse all guides.
Have a specific listing in mind? Get the official zoning, hazard and transaction data for that exact lot — plus the questions to send the agent — in one report.
Get a $49 risk report Free 12-point checklistThis guide is general information based on public sources cited above. It is not legal, tax, or real-estate brokerage advice. Confirm every item for a specific property with the agent, the municipality, and licensed professionals.