KODACHI / LAND, LIFE & EVIDENCE
Using land, population and tourism data in a property comparison
Record what a number measures, its geography and period, and its relevance to the property. An explicit unresolved column prevents assumptions becoming apparent facts.
A framework for the decision
- 01Source and definition
- 02Comparable indicators
- 03Property-specific enquiries
Editorial diagram. Confirm the sequence and responsibilities for the individual project.
01 / INSIGHT
Retain the original evidence
For every indicator record the source URL, table, year, unit and whether figures are final. Keep access to the original table, not only a reproduced chart, so later corrections can be traced.
02 / INSIGHT
Compare like with like
Do not place prefectural means beside municipal values, fiscal years beside calendar years, or visitors beside guest nights without distinction. Official standard-site land prices differ from transaction prices and valuations. Explain why non-equivalent indicators are separate.
03 / INSIGHT
Connect statistics to the property file
After narrowing areas, obtain access, boundary, use, works and management evidence. Label costs confirmed, quoted or unresolved; unknown is not zero. Identify the response needed before the next decision.
Before the consultation
| Item | What to establish |
|---|---|
| Evidence | Institution, table, URL, retrieval date and corrections. |
| Comparison | Geography, period, unit and coverage. |
| Property | Relevant condition, contact, deadline and remaining issue. |
Sources and authorities
Original publications are in Japanese. Confirm property-specific conditions with the responsible authority.
Continue your research
Thirty years of land prices in Okinawa and Tokyo: residential and commercial land
The 1995–2025 official land-price series shows different paths by prefecture and use. Average price levels and average annual changes at continuing survey sites are different measures.
18 / GUIDEAccommodation demand in Okinawa and Tokyo: total and foreign guest nights
The Japan Tourism Agency’s common guest-night measure allows comparison. Final 2024 and 2025 figures show total nights falling in Tokyo and rising in Okinawa; these are prefectural patterns, not property performance.
20 / GUIDEPopulation and households in Okinawa and Tokyo: reading beyond averages
Population and household counts tell different stories. Between the 1990 and 2020 censuses, households grew faster than population in both prefectures; population alone misses changes in housing use.