Japanese property records and evidence

Japanese property due diligence is not a search for one perfect document. It is a process of assembling fragments, a cadastral map here, a registry entry there, a planning certificate from the municipal office, and then testing them against each other. Newcomers often assume that a single national database holds everything. It does not. The records are maintained separately by local Legal Affairs Bureaus (法務局), municipal planning departments, and archived corporate registries, and no unified private portal combines them.

Every record in this directory is connected by the parcel identifier and the date of last registration, and any mismatch between those two fields across documents is the first thing a Japanese buyer’s solicitor checks.

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The core problem: fragmented, not centralised

Japanese property records are not one database. The land register (登記簿) is held by the local Legal Affairs Bureau (法務局) that has jurisdiction over the parcel. The cadastral map is maintained separately. Building approval records sit with the municipality. The family registry (koseki, 戸籍) is kept by the local government where the family’s head is registered. No unified national portal exists for private use.

This fragmentation has a practical consequence: a single parcel can appear under different parcel numbers, in different map sheets, or with different boundaries across the land register, the cadastral map, the fixed asset tax register, and the urban planning map. Your job is to connect records by identifiers, not to assume that one document is complete.

The two identifiers that link every record

Start every search by obtaining two pieces of data from the seller or agent:

1. The land parcel number (地番, chiban), not the street address.
2. The date of the last registration entry on the land register.

The parcel number is the key that unlocks the land register, the cadastral map, and the fixed asset tax register at the municipality. The registration date tells you whether the ownership record you are reading is current or whether a later filing exists that has not yet been reflected in the copy you hold. If the agent cannot supply both, instruct them to request a current registry extract before you proceed.

When you must engage a licensed professional

Three situations make a licensed professional mandatory, not optional:

• A boundary survey or boundary-dispute resolution requires a Land and Building Surveyor (土地家屋調査士).
• Filing a registration application for ownership transfer or a mortgage requires a Judicial Scrivener (司法書士).
• A formal valuation for litigation or bank financing requires a Real-Estate Appraiser (不動産鑑定士).

For contract review or litigation, engage a lawyer through the Japan Federation of Bar Associations (JFBA). For property sales and leases, the agent handling the transaction must be a licensed Real-Estate Agent (宅地建物取引士), who is legally required to deliver an explanation of important matters.

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What each record can establish, and what it cannot

Land register (登記簿, tōkibō)

Maintained by the Legal Affairs Bureau (法務局) for each parcel. The register establishes the current owner, the chain of ownership, the parcel number and area, and registered encumbrances such as mortgages (抵当権), easements (地役権), and leasehold rights (借地権) that are recorded. It does not establish actual boundary positions, market value, or physical building condition. Registration is legally required for ownership transfer against third parties, but the register does not guarantee the factual accuracy of boundaries or the physical condition of improvements. Retrieve the record by parcel number, not by address.

Cadastral map (地図, chizu / 不動産登記法第17条地図)

The official parcel-boundary map maintained by the Legal Affairs Bureau. It shows the shape and position of each parcel relative to roads and neighbouring land, plus the land category. It does not show building footprints, interior layouts, or the owner’s name. In many rural areas, the cadastral map is based on old surveys and may contain positional errors of several metres. A boundary dispute cannot be resolved from the map alone; a licensed surveyor must verify the boundary on site. Treat the map as a legal boundary record, not a topographic survey.

Building confirmation and inspection records

Three documents track a building’s regulatory history. Request all three from the municipal planning department and check that the dates align.

• Building Confirmation Application (建築確認申請): Filed with the local government for new construction; contains the architect’s plans, structural calculations, and the confirmation of compliance with the Building Standards Act. The application record shows the date of approval and the building’s design, but it does not prove that the building was constructed exactly as approved. Approval is a point-in-time decision; a later change in zoning or building standards does not retroactively invalidate an approved plan.
• Certificate of Confirmation (確認済証): The official confirmation that a building plan complies with the Building Standards Act at the time of approval. It is not a certificate of current legality; later alterations or zoning changes can render the current use non-conforming.
• Building Inspection Certificate (検査済証): Issued after a completed building passes inspection; the certificate confirms that construction followed the approved plans. Its absence does not automatically mean the building is illegal; the building may predate the current system or the certificate may have been lost.

Fixed Asset Tax Register (固定資産税台帳)

Municipal record of assessed value, land classification, building type, and floor area. It is used for tax assessment, not for market valuation; official assessed values are commonly 50-70% of market value, so it cannot substitute for an appraisal. Use this register to cross-check the building details against the land register and the confirmation application, not to estimate price.

Urban Planning Map (都市計画図)

Shows zoning districts, road plans, and public facility reservations. The map is a planning document, not a legal boundary record; read it alongside the official zoning ordinance and the current planning certificate issued by the municipality. Check whether the parcel falls within a Redevelopment Promotion Area (市街地再開発促進区域), a designated zone where public-private redevelopment projects are encouraged, because that status affects future use rights and compensation procedures.

Koseki (戸籍)

The family registry is not a property record but is needed to trace heirs when the owner is deceased. It is kept by the local government where the family’s head is registered. Use it to prove inheritance chains for property succession; a Judicial Scrivener can assist with obtaining and interpreting the correct extracts.

National Land Numerical Information (国土数値情報)

MLIT’s digital dataset of land-use, zoning, and infrastructure layers for GIS analysis. Use it to overlay parcel boundaries with hazard maps, planned infrastructure, and zoning changes before commissioning a site survey.

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Who holds which record, and where to apply

Record	Holding body	You need
Land register	Legal Affairs Bureau (法務局)	Parcel number
Cadastral map	Legal Affairs Bureau (法務局)	Parcel number
Building Confirmation Application	Municipal planning department	Building address and approval date
Certificate of Confirmation	Municipal planning department	Application reference
Building Inspection Certificate	Municipal planning department	Inspection date
Fixed Asset Tax Register	Municipal tax office	Parcel number and owner ID
Urban Planning Map	Municipal planning department	Parcel location
Zoning ordinance and planning certificate	Local Government Planning Department (市町村都市計画課)	Parcel number
Koseki	Municipal office where family head is registered	Deceased owner’s name and domicile

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Professional roles at a glance

• Land and Building Surveyor (土地家屋調査士): Conducts boundary surveys and prepares registry applications.
• Judicial Scrivener (司法書士): Prepares and files court documents, including property registration applications.
• Real-Estate Appraiser (不動産鑑定士): Produces formal valuation reports for litigation or financing.
• Architect (建築士): Designs buildings, prepares confirmation applications, and certifies structural compliance.
• Real-Estate Agent (宅地建物取引士): Handles property sales and leases, including mandatory explanations of important matters.
• Japan Association of Real Estate Agents (JAREA): Trade body for licensed agents; publishes ethical standards and dispute-resolution guidelines.
• Japan Real Estate Institute (JREI): Independent research body providing appraisal standards and market trend reports.

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Key legislation and designated zones

• Building Standards Act (建築基準法): Primary law governing structural safety, fire resistance, and site coverage.
• Urban Redevelopment Act (都市再開発法): Legal framework for coordinated redevelopment projects, including tenant relocation procedures.
• Redevelopment Promotion Area (市街地再開発促進区域): Designated zone where public-private redevelopment projects are encouraged; check the planning certificate for this designation.

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Archived research notes

Former consultancy’s public research notes on redevelopment case studies and procedural timelines are preserved as Archived NEEDS Site Content. These notes are not legal advice but can help you understand typical timelines and stakeholder structures in designated redevelopment zones.