Reviewed by a Koukyuu Takkenshi (宅地建物取引士)
Fact-checked against current Japanese real-estate law, tax rules, and market data by a nationally licensed specialist who oversees luxury transactions across Minato, Shibuya, and Chiyoda. In Japan, a Takkenshi is legally required to sign off on every property transaction, and about 15% of candidates pass the exam each year.
In April 2026, the Shirokane-Takanawa submarket recorded 47 existing condominium transactions above ¥100 million, a 12% increase from the same quarter in 2025. Days-on-market for well-located units under ¥300 million compressed to approximately 45 days. The acceleration is not speculative. It is structural, driven by a legislative change taking effect January 1, 2027, that will alter how rental real estate is valued for inheritance and gift tax purposes.
The 2027 Valuation Reset and Its 2026 Window
The FY2026 Tax Reform Outline, published by the National Tax Agency, introduces the most consequential change to real estate valuation in two decades. Under current rules, rental properties are assessed at 路線価 (rosen-ka, road-frontage price) for land and 固定資産税評価額 (fixed asset tax assessed value) for buildings. This typically yields an effective valuation of 30-50% of market value, a discount that has made Tokyo luxury apartments a favored vehicle for intergenerational wealth transfer.
From January 1, 2027, this changes. Rental properties acquired within five years of inheritance or gift will be valued at 80% of acquisition cost, not the traditional assessed value. Real estate fractional products, including TK (tokumei-kumiai) and GK (godo-kaisha) structures commonly used by institutional investors, will be valued at 時価 (jika, market value) with no time limit.
The December 31, 2026 deadline is absolute. Transactions completing in 2026 retain the old valuation rules. The 2022 Supreme Court ruling on 総則6項 (General Rule 6, the anti-avoidance provision) affirmed National Tax Agency authority to substitute market value where transactions are structured primarily for tax reduction. Foreign buyers with estate planning objectives are compressing due diligence timelines accordingly.
Current Price Levels and Transaction Mechanics
According to Tokyo Kantei’s April 2026 market report, new condominium prices in the Shirokane-Takanawa submarket averaged ¥1.95 million per tsubo, approximately ¥590,000 per square meter. Premium towers exceed ¥2.4 million per tsubo, placing Shirokane-Takanawa behind only Azabudai Hills-adjacent districts and Ginza in absolute price terms.
| Segment | Price per Tsubo | Typical 150㎡ Unit |
|---|---|---|
| Existing mid-luxury (15-20 years) | ¥1.2-1.6 million | ¥550-750 million |
| New/premium new (2024-2026 delivery) | ¥1.9-2.4 million | ¥850 million-¥1.1 billion |
| Ultra-luxury tower | ¥2.5-3.0 million+ | ¥1.1-1.4 billion+ |
The 国土交通省 (Ministry of Land, Infrastructure, Transport and Tourism) official land price survey published March 2026 recorded 4.2% year-on-year appreciation in the Shirokane-Takanawa station area, against a 23-ward average of 3.1%. Cumulative gains since 2020 now exceed 25% in prime Shirokane addresses.
Notable 2026 completions include Park Court Shirokane The Tower, delivered March 2026, and The Parkhouse Shirokane 2-chome, scheduled for September 2026. Both were substantially pre-sold. Residual inventory on the secondary market commands 15-20% premiums to initial offering prices. A Shirokane tower unit with exclusive flat parking space currently listed at ¥359.8 million illustrates current asking levels for completed stock with immediate occupancy.
Fixed Asset Tax and Urban Planning Tax: FY2026 Specifics
For foreign buyers acquiring Shirokane apartments in 2026, the tax framework operates as follows. FY2026 is a freeze year in the three-year revaluation cycle. Assessed values remain at FY2024 levels unless the property was newly constructed, extended, or subdivided. Purchases of existing apartments in 2026 are taxed on FY2024 assessed values through March 2027. The next revaluation occurs in FY2027, with notices reflecting 2025-2026 market appreciation arriving April 2027.
Shirokane addresses fall under Tokyo Metropolitan Government tax administration. Key provisions:
| Provision | Tokyo 23-Ward Treatment |
|---|---|
| Urban planning tax rate | 0.3% (statutory maximum) |
| Small-scale residential land (200㎡ or less) | Fixed asset tax base: 1/6 of assessed value; Urban planning tax base: 1/3 of assessed value |
| General residential land (over 200㎡) | Fixed asset tax base: 1/3; Urban planning tax base: 2/3 |
| Tokyo-specific surcharge | Urban planning tax on small-scale residential land further halved through FY2026 |
The 新築住宅減額 (new residential reduction) applies to apartments completed between April 1, 2026 and March 31, 2031. Condominiums of three or more stories with fire-resistant construction receive five years at half the building tax. Certified Long-Life Housing receives seven years. The reduction applies to floor area up to 120㎡ per unit. For a typical 150㎡ Shirokane luxury unit, the portion exceeding 120㎡ is taxed at standard rates.
Critical Calendar Dates for 2026 Buyers
The 賦課期日 (fukazeiteki, assessment reference date) is January 1. A buyer completing January 2, 2026 or later owes no FY2026 fixed asset tax. This liability remains with the seller. Luxury transactions typically include contractual proration, though this is negotiable, not statutory.
FY2026 tax notices issue April through June 2026, with four instalments: June, September, December 2026; February 2027. Non-residents must designate a 納税管理人 (nozei-kanrinin, tax payment agent) to receive notices and remit payments. Failure to designate risks penalties.
For estate planning transactions, the relevant deadline is December 31, 2026. Completion after this date subjects the property to the 80% acquisition-cost valuation rule for any inheritance or gift within five years. The compression in Q1 2026 transaction volume suggests sophisticated buyers are not waiting.
Foreign Buyer Practicalities
Japan imposes no nationality-based ownership restrictions. Tax rates, reductions, and payment mechanics apply identically to residents and non-residents. The practical distinctions concern mortgage access and administrative compliance.
永住権 (eijuuken, Japanese permanent residency) significantly expands mortgage availability. Without permanent residency, foreign buyers typically face loan-to-value ratios of 50-60% versus 80-90% for permanent residents, and interest rate spreads of 50-150 basis points. Some institutional lenders have tightened non-resident policies in 2026 following Bank of Japan rate adjustments. Cash transactions dominate the ¥300 million-plus segment.
The 特定空家 (tokutei-akiya, Specified Vacant House) designation under the 2015 Vacant House Measures Act removes residential land reductions, potentially increasing land tax up to six times. Foreign owners with intermittent Tokyo presence should maintain usage documentation or engage property management. A Premist Tower Shirokane Takanawa unit at ¥338 million, currently tenanted, illustrates the income-producing structure that mitigates vacancy risk.
Due Diligence Specifics for Accelerated Timelines
The compressed transaction timeline for 2026 estate-planning acquisitions increases due diligence risk. Standard practice in Tokyo involves 重要事項説明 (juuyou-jikou-setsumei, the statutory pre-contract disclosure meeting) conducted by a licensed 宅建士 (takken-shi, Japan’s licensed real-estate transaction specialist). This meeting covers title defects, encumbrances, zoning restrictions, and management association financials.
For foreign buyers, the disclosure documents are typically Japanese-language. Translation quality varies. The statutory 手付金 (tetsuke-kin, earnest-money deposit) of 10% becomes non-refundable upon contract execution. 登記 (touki, the transfer of legal title recorded at the Legal Affairs Bureau) typically completes 2-4 weeks after contract, contingent on mortgage disbursement or wire transfer clearance.
REINS (the national MLS operated by the Real Estate Information Network) data shows transaction concentration in the ¥100-300 million band, with thinning inventory above ¥500 million in Shirokane proper. Buyers targeting the ¥300 million-plus segment face limited supply and competitive bidding. Koukyuu observes that transactions in this band increasingly involve direct negotiation with sellers prior to public listing, bypassing the standard REINS marketing period.
Koukyuu is a private buyer’s advisory for distinguished Tokyo residences in Shirokane (白金), Hiroo (広尾), and Minato-ku (港区), focused exclusively on transactions of ¥300 million and above. A licensed 宅建士 personally handles every stage of the engagement, from the first consultation to the signing. Book a private consultation).
