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The aggregated results shown on this site are published as CSV (UTF-8 with BOM, openable in Excel) and JSON. They contain no information on individual properties, addresses or cases. The column names and values inside the files are in Japanese.
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Data as of: market 2026Q1 / land prices 2026 / auction tally 2026-10-10. Updated once a week.
CSV
- Auction discount rates (prefecture × type × building-age band)Median and interquartile range of winning bid ÷ market price and ÷ reference sale price, and sample sizes. Only bands with 10 or more samples.32 rows · 2KB
- Auction discount rates (condominiums by municipality)Only municipalities with 30 or more samples.32 rows · 1KB
- Auction winning bid ÷ reference sale price by number of biddersMedian and interquartile range by bidder-count band. Only bands with 10 or more samples.4 rows · 0KB
- Regional prices (summary by prefecture × type)Median and interquartile range of the price per ㎡, number of transactions and year-over-year change for the last 5 years.12 rows · 0KB
- Regional prices (by municipality)Only municipalities with 30 or more transactions.644 rows · 53KB
- Price trends (quality-adjusted price per ㎡)Price per ㎡ (yen) of the reference property, by quarter.480 rows · 22KB
- Prices by stationMedian price per ㎡ and median price by nearest station. Only stations with 30 or more transactions.1,909 rows · 125KB
- Official land prices (by municipality)Median of the standard parcels in the latest year. Only municipalities with 5 or more standard parcels.308 rows · 14KB
- Official land price indexAn index chaining the median year-over-year change across survey points (first year of each series = 100).289 rows · 9KB
- Price factors (multipliers for building age, area and walking time)Multipliers with the price per ㎡ of the reference property set to 1.0. Average tendency of the model.292 rows · 16KB
JSON
This is the very aggregation used to render the site. Keys correspond to the column names of the CSV files.
- discount.jsonThe aggregated figures behind the site, as JSON.30KB
- market.jsonThe aggregated figures behind the site, as JSON.825KB
- stations.jsonThe aggregated figures behind the site, as JSON.384KB
- land.jsonThe aggregated figures behind the site, as JSON.67KB
- factors.jsonThe aggregated figures behind the site, as JSON.27KB