{ "meta": { "schema_version": "0.2", "generated_at": "2026-08-31T09:49:41+00:00", "coverage": "Tokyo 23 wards", "period": "2025 (calendar year, all quarters)", "sources": [ { "id": "XIT001", "name": "不動産価格情報取得", "api_id": "XIT001", "license": "PDL1.0", "url": "https://www.reinfolib.mlit.go.jp/" } ], "attribution_ja": "出典：国土交通省 不動産情報ライブラリ（https://www.reinfolib.mlit.go.jp/）を加工して作成", "disclaimer_ja": "このサービスは、国土交通省の不動産情報ライブラリのAPI機能を使用していますが、提供情報の最新性、正確性、完全性等が保証されたものではありません", "disclaimer_en": "This service uses the API of the Real Estate Information Library provided by the Ministry of Land, Infrastructure, Transport and Tourism (MLIT) of Japan. MLIT does not guarantee the timeliness, accuracy or completeness of the provided information.", "fixture_derived": true, "notes": [ "Prices are derived statistics computed from individual transaction records; they are not published by MLIT in this form.", "district_code_source is the source-side code and is not guaranteed to be stable across MLIT data updates.", "FIXTURE DATA ONLY — numbers are intentionally fake and are not real MLIT data." ] }, "data": [ { "city_code": "13101", "city_name_en": "Chiyoda", "city_name_ja": "千代田区", "prefecture_en": "Tokyo", "prefecture_ja": "東京都", "year": 2025, "transactions": { "count": 0, "count_with_unit_price": 0, "median_price_per_sqm_jpy": null, "mean_price_per_sqm_jpy": null, "p25_price_per_sqm_jpy": null, "p75_price_per_sqm_jpy": null, "median_area_sqm": null, "by_type": [] }, "districts": [] }, { "city_code": "13102", "city_name_en": "Chuo", "city_name_ja": "中央区", "prefecture_en": "Tokyo", "prefecture_ja": "東京都", "year": 2025, "transactions": { 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