Land-Building Allocation and Depreciation in Japanese Property

Allocation changes more than the first tax return

A Japanese property transaction can contain land, building, equipment, leasehold, private-road shares, furniture, and other assets. Land is not depreciated like a building. The building allocation affects depreciation, current taxable rental income, consumption-tax analysis where relevant, remaining basis, and gain at sale. It should be supportable, consistent, and preserved from acquisition through exit.

Do not select the building number only because it produces a desired deduction. Start with the contract and available evidence, then obtain tax and valuation advice for the actual transaction.

Inventory what was acquired

List every land parcel, building, condominium unit, ancillary structure, private-road share, leasehold interest, equipment, furniture, tenant improvement, and transaction cost. Reconcile the sale contract, important-matters explanation, registry, fixed-asset assessment, plans, invoices, and physical asset.

For a condominium, the purchase includes the unit and associated land right or share, while common property is reflected through the ownership structure. A single marketing price does not eliminate the tax need to identify components.

For a furnished investment or business asset, determine whether material equipment has a separate supported value and useful-life treatment. Do not break out decorative contents merely to accelerate deductions.

Evaluate allocation evidence

Possible evidence can include an explicit arm's-length contract allocation, fixed-asset assessed values, appraisal, replacement-cost analysis less depreciation, seller accounting, consumption-tax calculation, or another supportable method. Each answers a different question and can produce different proportions.

Assessed value is a tax-administration measure, not direct market value. Replacement cost does not capture land scarcity or exact transaction bargaining. Contract allocation can be unreliable if unsupported or tax-motivated. The adviser should explain why the selected method fits the facts and how contradictions were resolved.

Preserve calculations, source dates, values, and approvals. A spreadsheet without underlying documents is weak audit evidence.

Allocate transaction costs consistently

Brokerage, registration, acquisition tax, legal and scrivener work, survey, lender, construction, and other costs can require capitalisation, deduction, or allocation under current rules. Some relate to land, some to building, some to debt, and some to current operations. Do not add all closing costs to the building to increase depreciation.

Create a closing-cost ledger with payee, invoice, purpose, asset, tax treatment, currency, date, and supporting document. Reconcile it to bank movements and the settlement statement.

For a company, align tax and financial accounting with adviser guidance. For a foreign owner, maintain a home-country bridge where classification differs.

Establish the depreciation schedule

Record building structure, construction date, acquisition date, new or used status, statutory useful-life analysis, method, rental commencement, personal-use period, floor or use allocation, and improvements. Separate the original building from later capital additions where required.

Repairs that maintain condition can be treated differently from improvements that add value or extend life. The invoice label does not control. Preserve scope, reason, photographs, design, and accountant conclusion.

If part of the property is personally used, establish a supportable allocation. If it becomes rental later, record the transition and required basis analysis.

Worked allocation sensitivity

Assume a JPY 100 million purchase before costs. Allocation A assigns JPY 70 million to land and JPY 30 million to building. Allocation B assigns JPY 55 million to land and JPY 45 million to building. Before useful-life and other rules, B creates 50% more building basis for depreciation.

That larger basis can reduce current taxable rental income, but it also leaves a different depreciated basis at sale. It may affect consumption-tax and accounting questions. The difference is not a free tax benefit; it must be supported and followed consistently.

The illustration does not endorse either allocation. It shows why a percentage chosen from another transaction should not be imported.

Reconcile tax, valuation, and cash without blending them

Maintain separate columns for contractual price, consumption-tax allocation where applicable, fixed-asset assessed value, lender appraisal, market valuation, accounting carrying amount, and Japanese tax basis. A figure can be correct for its purpose while unsuitable for another. The fixed-asset ratio may support one allocation method but does not prove open-market component values. A lender's collateral split may include conservative policy adjustments.

Where evidence conflicts, record the date, authority, purpose, and methodology. Ask the tax adviser to select or refine the allocation and state why. Do not average incompatible values simply to create a middle answer.

For a building purchased with an existing lease, separate property value from tenant deposits, rent adjustments, equipment, and other transferred balances. For a redevelopment purchase, identify whether the building has continuing economic use or is acquired for demolition and obtain advice on the treatment of acquisition and demolition costs.

Capital expenditure after acquisition

For each project, preserve approval, design, contractor scope, itemised invoice, completion, photographs, warranties, and date placed in service. Divide work into repair, improvement, new component, common-area contribution, and professional cost according to advice. Track replacement of existing components so disposed basis is not left unexplained.

Example: a JPY 12 million renovation containing JPY 3 million of like-for-like repair, JPY 7 million of new kitchen, bathroom, and services, and JPY 2 million of design and approval cannot be booked correctly from the total invoice alone. The classification, allocation of professional cost, useful lives, and timing require the detailed file. This example illustrates the evidence problem, not a tax answer.

Quality checks before filing

• Do land, building, equipment, and costs reconcile to the purchase statement?
• Does the selected allocation have contemporaneous evidence and adviser sign-off?
• Are personal-use and rental-use periods separated?
• Are principal and interest, repair and improvement, and unit and common costs separated?
• Does the fixed-asset register reconcile to tax returns and physical assets?
• Are additions, disposals, and sale basis updated rather than appended inconsistently?
• Can a future adviser reproduce every material number without relying on memory?

If the answer is no, correct the ledger while documents and professionals remain available.

Maintain the exit bridge

Each year, update opening basis, additions, depreciation, disposals, and closing basis. Retain invoices and tax returns. Before sale, reconcile the register to the physical assets and identify demolition, removal, or replacements.

Calculate gain from supported remaining basis, not original price. If records are missing, the fallback can be materially worse than the economic history. A durable acquisition file is part of exit value.

Primary sources

• National Tax Agency — Real-estate rental income and necessary expenses: https://www.nta.go.jp/taxes/shiraberu/taxanswer/shotoku/1370.htm
• National Tax Agency — Long-term real-estate capital gains: https://www.nta.go.jp/taxes/shiraberu/taxanswer/joto/3208.htm
• Tokyo Metropolitan Government — Fixed-asset and city-planning tax: https://www.tax.metro.tokyo.lg.jp/kazei/real_estate/kotei_tosi
• National Tax Agency — Registration and licence tax: https://www.nta.go.jp/taxes/shiraberu/taxanswer/inshi/7191.htm

Reviewed against the linked sources on 23 August 2026. Allocation and depreciation require current transaction-specific Japanese tax advice.