Interactive sample
Inspect one municipality, compare several or review ten years of history for one question at a time.
Pre-owned condominium · 2025
The value, period and supporting record count stay together.
Transactions and population context are joined by municipality. Official land prices are in preparation.
Annual observations are attached to the year they describe and shown in chronological order.
Each result keeps its sample size, calculation basis and source notes.
Use REST or MCP, with up to 20 search results and five areas per comparison.
Pick a question, then explore one area, compare several municipalities or inspect the ten-year history.
Shown with
Select a ward to inspect the sample result.
Same measure, year, property type and calculation.
| Municipality | Value | Sample | vs. highest selected |
|---|
One shared scale. A missing value stays missing.
Median price per m² against the number of transactions behind it.
Every screening response returns the count, the exclusion counters and the minimum sample size that produced the value.
Annual observed medians. Not a forecast, index or investment return.
The selected question is available through REST and MCP with the same result and credit cost.
Same request shape, for MCP-compatible assistants.
Limits apply to the whole customer account, even when it has more than one API key.
Price searches cover one prefecture at a time and do not claim to rank every municipality in Japan.
Every area is compared using the same year, property type and calculation.
Rolls on a 30-day window, not the calendar month.
| Current municipality · usage | 1 credit |
| District summary | 3 credits |
| Annual history · compare | 5 credits |
| Municipality search | 10 credits |
The subscription covers maintained data preparation, consistent calculations and source notes.
Calculation notes
Source records are cleaned and grouped into one municipality result. The API keeps the calculation basis, sample size and missing-value reason beside the answer.
Values arrive as text, one transaction and quarter at a time.
Area: "9999" is treated as an ambiguous placeholder, not 9,999 m².
The municipality, year, property type and calculation basis stay together.