Ownership, leases and boundaries

Japanese real estate (不動産) research is the systematic process of locating, interpreting and applying fragmented official records, cadastral maps, land registries, construction plans and planning-permission histories to establish who holds which right over which parcel or structure. The central record is the 登記 (registration) system, but it does not exist as one national database. Records are spread across local Legal Affairs Bureaus (法務局), municipal planning departments and archived corporate registries. No unified national portal exists for private use.

The core question

Who holds which right over which parcel or structure?

Answer that question by reading the current register (登記簿 tōkibo), the cadastral map (地図 chizu) and the supporting instruments filed at the local Legal Affairs Bureau (法務局). The register is the primary record of ownership and encumbrances; the cadastral map is the primary record of parcel boundaries. Neither alone is sufficient.

The record system

Japanese real estate (不動産, fudōsan) is recorded in a parcel-based system, not a structure-based system. The land register (登記簿, tōkibo) records rights over each parcel (土地) and each registered structure (建物). A single structure may span several registered parcels; a single parcel may hold several registered structures. Check this mismatch before any renovation or redevelopment analysis.

The register is maintained by the Legal Affairs Bureau (法務局) for each jurisdiction. While the entries are increasingly digitised, they are not unified into one private search portal. You will normally need to search by the parcel’s location and land number (地番), not by address alone.

What the fragmented records contain

Japanese real estate (不動産, fudōsan) records are fragmented. The main pieces are:

• Cadastral map (地図, chizu), official parcel-boundary map, often digitised but not fully integrated with the land register. Older surveys in rural areas can have positional errors of several metres.
• Land register (登記簿, tōkibō), official record of ownership, mortgages, easements and other rights for each parcel.
• Construction records, plans, confirmation applications (建築確認申請) and inspection records filed with local government.
• Planning records, urban planning maps (都市計画図), zoning confirmations and redevelopment area designations.
• Fixed asset tax register (固定資産税台帳), municipal record of assessed value and structural details. Official fixed-asset valuations are typically 50-70% of market price, so they cannot be used as a reliable market proxy.

Records are spread across local Legal Affairs Bureaus (法務局), municipal planning departments and archived corporate registries.

登記 (registration)

The land register is maintained by the Legal Affairs Bureau (法務局) for each jurisdiction. It records ownership, mortgages, easements and other encumbrances. A registered owner is not always the only owner: up to 5% of parcels have unregistered ownership changes, especially after inheritance. The family registry (戸籍, koseki) is used to prove inheritance chains for property succession.

What to check on a parcel

• Ownership chain, every transfer should be traceable to the current registered owner.
• Encumbrances, mortgages, easements or liens. An encumbrance may be dormant but still requires formal release before sale.
• Parcel boundaries, the cadastral map may not match the actual surveyed boundaries. A licensed land and building surveyor (土地家屋調査士) conducts boundary surveys and prepares registry applications.

A judicial scrivener (司法書士) prepares and files property registration applications. A real-estate appraiser (不動産鑑定士) produces formal valuation reports for litigation or financing.

Development and rebuilding

Development and rebuilding plans depend on zoning and construction regulations. Key laws:

• Building Standards Act (建築基準法), governs structural safety, fire resistance, site coverage and road access.
• Urban Redevelopment Act (都市再開発法), framework for coordinated redevelopment projects, including tenant relocation procedures.

Key figures to verify

• Floor-area ratio (FAR), percentage of site area. The published ratio is a maximum; shadowing, setback and parking requirements typically reduce achievable floor area by 10-30%.
• Building coverage ratio (BCR), percentage of site area that can be built upon. Fire-safety setbacks and easements often reduce the buildable footprint below the ratio.
• Zoning category, residential, commercial, industrial. Commercial zones allow more uses but often have higher land taxes and stricter noise regulations.

A confirmation application (建築確認申請) is filed with local government for new construction. A permit issued before the 1981 seismic code revision may require costly upgrades.

Redevelopment areas and tenant relocation

A redevelopment promotion area (市街地再開発促進区域) is a designated zone where public-private redevelopment projects are encouraged. The Urban Redevelopment Act provides the legal framework, including tenant relocation procedures.

Relocation compensation is not a single fixed formula. Published guidelines are minima, but actual negotiated amounts vary widely by project and the tenant’s bargaining position.

Seismic rating and structural condition

Seismic rating is based on design calculations, not post-construction inspection, so actual performance may differ. A structure’s actual maintenance history matters more than its age on the register. A permit issued before the 1981 seismic code revision may require costly upgrades.

Working with professionals

Licensed professionals you may need:

• 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.
• Japan Association of Real Estate Agents (JAREA), trade body for licensed agents; publishes ethical standards and dispute-resolution guidelines.

Official digital data

National Land Numerical Information (国土数値情報) is MLIT’s digital dataset of land-use, zoning and infrastructure layers for GIS analysis. Download it and use it in GIS software.

Urban Planning Map (都市計画図) shows zoning districts, road plans and public facility reservations. Local government planning departments (市町村都市計画課) issue planning certificates and zoning confirmations.

Archived NEEDS site content

Former consultancy’s public research notes on redevelopment case studies and procedural timelines. This content is archived and may be outdated or incomplete.

Common misconceptions

• Land register ownership is definitive, up to 5% of parcels have unregistered ownership changes.
• Official road width on the cadastral map matches the actual paved width, it may not.
• Structure age indicates structural condition, actual maintenance history matters more.
• Seismic rating guarantees actual performance, the rating is based on design calculations, not post-construction inspection.
• Fixed-asset valuation is a market proxy, official valuations are typically 50-70% of market price.
• A past planning approval is still valid, it may have lapsed if construction did not start within the statutory period.

Practical considerations

• Parcel area, irregular shapes and road-access requirements often reduce usable area below the cadastral figure.
• Road frontage width, wider is better for access; the official road width on the cadastral map may not match the actual paved width.
• Number of co-owners, lower is better for decision-making; a single co-owner with a minority share can block redevelopment for years.
• Lease term remaining, the registered lease term may not reflect renewal rights under the Land and Building Leases Act.
• Encumbrance count, lower is better; an encumbrance may be dormant but still requires formal release before sale.
• Survey accuracy, older cadastral surveys may have errors of several metres, especially in rural areas.
• Permit issue date, newer permits reflect current standards; a permit issued before the 1981 seismic code revision may require costly upgrades.

Summary

Japanese real estate records are fragmented but reviewable. Start with the cadastral map and land register at the relevant Legal Affairs Bureau, then check construction records, planning records and the fixed asset tax register at the local government office. Verify boundaries with a surveyor, check the ownership chain and encumbrances, and confirm the zoning and building ratios before making decisions.