Japan Property Intelligence

YUDANE

The right house exists.
Finding it takes patience, and the right eyes.

福岡県の不動産インテリジェンス · 外国人向け空き家・住宅データプラットフォーム

Fukuoka · Japan · 2026

What We Do

プラットフォームについて
不動産情報 · リスクデータ · 調査

Property intelligence for people who want to understand Japan, not just buy it.

Japan's residential property market is the most data-rich and least data-accessible in the world. Public records exist. Risk information exists. The infrastructure to surface it for a foreign buyer has not, until now.

Yudane aggregates, scores, and contextualises property data across Fukuoka Prefecture — asbestos risk, vacancy status, hazard overlays, walkability, demolition costs. The kind of information a good buyer's agent would find for you, made open and legible.

We are not an estate agent. We do not receive referral fees. The data is the product.

石綿リスク確認ツール · Contractor Tool

Asbestos risk, by district — before you arrive on site.

Japan's pre-demolition asbestos survey has been legally mandatory since April 2022. The survey is required. The site-level risk data to prepare for it has not existed — until now.

The Yudane asbestos risk tool covers 1,360 residential districts across all 51 municipalities of Fukuoka Prefecture, scored from 31,184 building transaction records using Japan's documented regulatory thresholds: 1975, 1990, 2000, and 2006.

Type a district or address. Understand the likely asbestos risk tier, dominant structure types, and applicable survey procedure before the crew leaves the yard.

2022年4月施行の改正大気汚染防止法に基づき、解体工事前の事前調査が義務化されています。本ツールは、福岡県全域51市区町村・1,360地区のアスベストリスクを提供する無料の調査支援ツールです。

Beta tool — open access. Data is derived from MLIT transaction records and construction-era regulatory history. It does not substitute for a certified asbestos survey (一般建築物石綿含有建材調査者). Results are indicative; field verification is required before any demolition or renovation work begins.

石綿リスク確認 · Asbestos Risk

Risk profile before you arrive on site

Free, open, and updated from MLIT data. 1,360 districts across Fukuoka Prefecture.

石綿リスク確認ツールを開く

Coverage

Very High116 districts
High192 districts
Elevated436 districts
Low–Moderate455 districts
Low161 districts

51 municipalities · 31,184 buildings · Fukuoka Prefecture 2022–2024

Peer Review Preprint · Environmental Health & Preventive Medicine · March 2026

A Construction-Era Asbestos Risk Index for Residential Districts in Fukuoka Prefecture Using MLIT Transaction Data

Author Sebastian Larsen Affiliation Yudane, Fukuoka, Japan ORCID 0009-0008-9711-9556 DOI 10.5281/zenodo.19087985 Licence CC BY 4.0 / MIT

This paper presents a district-level construction-era asbestos risk index covering 1,360 residential districts across all 51 municipalities of Fukuoka Prefecture, derived from 31,184 building transaction records from the MLIT Real Estate Information Library. Using Japan's documented asbestos regulatory thresholds — 1975, 1990, 2000, 2006 — five-tier risk scores are assigned to individual buildings and aggregated to district level. To the authors' knowledge, this is the first publicly available asbestos risk overlay at district and property resolution for any Japanese prefecture. The full dataset, pipeline, and analysis code are released openly.

Dataset & Code — DOI 10.5281/zenodo.19087985 ↗ GitHub Repository ↗
Corporate Enquiries · 法人向けお問い合わせ

Working with data at scale.

If your organisation works with Japanese property — relocation, investment, demolition contracting, municipal planning, research — we would like to hear from you.

  • Municipality or prefectural government (asbestos data integration)
  • Demolition and survey contractors (bulk risk data access)
  • Relocation firms and international property advisors
  • Academic researchers (methodology collaboration)
  • MLIT and affiliated agencies
Send a message

Message sent — we will be in touch.

Something went wrong. Please try again later.