The National Tax Agency published nationwide 2026 road values
Japan's National Tax Agency released its 2026 rosenka maps and valuation multipliers on July 1. Rosenka assigns a value per square meter to land fronting specified roads and is used as a basis for valuing land for inheritance and gift tax purposes. In locations where no rosenka is assigned, a multiplier method based on fixed-asset tax valuation may apply. The figures are important tax references for property owners, but they are not the same as an estate agent's appraisal or the price at which a property would actually sell.
Tokyo-area figures also show substantial location differences
The Tokyo Regional Taxation Bureau publishes the highest rosenka in each tax-office jurisdiction. One example is Harumi-dori in Yurakucho 2-chome, Chiyoda Ward, where the 2026 top value was 27.52 million yen per square meter, 2.7% higher than the previous year. Values and annual changes vary considerably by jurisdiction. A jurisdiction's highest rosenka represents one specific location and should not be interpreted as evidence that every parcel in the surrounding market changed by the same percentage.
The data are relevant to foreign owners of Japanese property
Overseas residents who own real estate in Japan may encounter Japanese valuation rules when inheritance or gifts occur. The actual tax treatment depends on multiple factors, including the status and residence history of the relevant parties and the location of assets, so individual cases require separate analysis. Rosenka itself, however, is public information and can be checked before purchasing a property. It can therefore help international buyers understand the tax-assessment value attached to land in addition to its market price.