Japan Tax Auction Real Estate – NTA Public Auction (国税庁 公売)

Get every real estate and farmland listing that Japan's National Tax Agency is selling at public auction (公売 — property seized for unpaid national taxes) in one clean table: property type, farmland flag, prefecture and municipality, estimated price (minimum bid) in JPY, land use, land and floor area, taxation bureau, method of sale, bidding period, bid-opening date, deposit, and a link to the official notice. Schedule it weekly with change tracking to receive only new and re-priced listings. English field names, Japanese originals kept. No coding needed.

Source: 国税庁「公売情報」 https://www.koubai.nta.go.jp/ (edited by this Actor; see FAQ).

What data can you extract?

Field	Description	Example
propertyId	Stable listing ID (bureau, fiscal year, notice no., sale kind, sale unit)	02001-2026-14-2-18420001
propertyCategory / propertyCategoryJa	land_with_building, condominium_unit, building, land, farmland, other_real_estate	land / 土地
isFarmland / farmlandCertificateRequired	Farmland category; whether the notice requires a farmland purchase eligibility certificate (買受適格証明書)	false / false
prefecture / prefectureEn / municipality	Location down to city/ward/town only (no street or lot number)	千葉県 / Chiba / 山武市
estimatedPriceJpy	見積価額 — the minimum price; bids must be at or above it	110000
listingStatus	new (first auction) or reappraised (price revised after an earlier auction)	reappraised
mainLandUseJa / mainLandUseEn	Registry land category (宅地, 田, 畑, 山林 …)	山林 / Forest
mainBuildingTypeJa / mainBuildingTypeEn	Registered building use (居宅, 店舗 …)	居宅 / Dwelling
landAreaSqm / floorAreaSqm	Total land area and floor area in m²	1814 / null
taxBureau / taxBureauJa / taxOfficeJa	Regional taxation bureau and executing office	kanto-shinetsu
auctionMethod / auctionMethodJa	period_bid (期間入札), date_bid, internet_auction, advertised_private_sale	period_bid
bidStartAt / bidEndAt / bidOpeningAt	Bidding period and bid opening (ISO 8601, JST)	2027-01-05T09:00:00+09:00
additionalBidStartAt / additionalBidEndAt	Additional bidding round, when the notice has one	2027-01-25T09:00:00+09:00
saleDecisionAt / paymentDeadlineAt	Sale decision and deadline to pay the full price	2027-02-09T14:00:00+09:00
depositRequired / depositJpy	Bid deposit (公売保証金); 0 when not required	true / 200000
announcementNo / saleUnitNo / fiscalYear	Notice number and sale-unit number (quote them to the tax office)	14号 / 1842-1 / 2026
nearestAccessJa	Nearest station and distance, as printed	JR(東日本) 総武本線 成東駅 南西方約1.5キロメートル
changeType / previousPriceJpy / firstSeenAt	With change tracking: first_run, new, price_changed, unchanged	new
detailUrl / source	Official notice page and the attribution required by the NTA terms	https://www.koubai.nta.go.jp/…

How many listings are there? On 2026-10-10 the NTA site listed 154 properties nationwide: 72 farmland, 42 land, 30 land with building, 8 buildings, 2 condominium units — all sold by sealed bid during a bidding period (期間入札). Estimated prices ranged from ¥20,000 to ¥312,000,000. New auction notices are published by the regional bureaus several times a month (the site's news list shows about 16 notices between 4 Aug and 25 Sep 2026), so a weekly run is usually enough.

What this Actor does not return: movable property (cars, jewellery, art) and memberships — the NTA listed none on the day the Actor was built, so their pages could not be verified; non-listed shares and other non-real-estate items; photos, maps, floor plans and the PDF notices; and any free-text remarks, because they can mention owners or occupants.

Why scrape Japanese tax auction listings?

1. Deal sourcing — tax-auction real estate starts at the tax office's estimated price; reappraised listings (listingStatus: "reappraised") have already had their price revised. Filter by prefecture and price band and review the official notice before bidding.
2. Bidding calendar — bidStartAt, bidEndAt and bidOpeningAt for every listing in one table, so you never miss a bidding window that only appears in a Japanese PDF notice.
3. New-listing alerts — schedule weekly with changeTracking: "new_only" and receive only listings that were not there last week, plus any whose price changed.
4. Market research — compare estimated prices per m² by municipality and land use, or track how many farmland vs. residential plots each bureau puts up for sale.
5. AI agents / RAG — let an LLM agent answer "Which houses are up for tax auction in Kanagawa under ¥10M, and when does bidding close?" through the Apify MCP server, with English field names, ISO dates and JPY integers it can reason over.

Note: buying at a Japanese tax auction requires bidding in Japanese procedures (deposit, documents, payment in full by the deadline; no handover is guaranteed by the government), and farmland cannot be acquired without a permit under the Agricultural Land Act. This Actor only reports the published listings.

How to use it (no coding)

1. Click Try for free.
2. Choose Property types (all six by default) and, optionally, Prefectures, Regional taxation bureaus or a price band.
3. Set Max results — 20 by default; 1000 returns every current listing.
4. Keep Include bidding dates and deposit on to get the bidding period from each notice page.
5. Click Start, then export the results as JSON, CSV or Excel.
6. To monitor, create a Schedule (e.g. every Monday 09:00 JST) with Change tracking = new_only and Max results = 1000.

Input example

{
  "propertyTypes": ["land_with_building", "condominium_unit", "building", "land", "farmland", "other_real_estate"],
  "prefectures": [],
  "taxBureaus": [],
  "maxItems": 20,
  "includeDetails": true,
  "changeTracking": "off",
  "stateStoreName": "japan-nta-public-auction-state",
  "maxConcurrency": 2,
  "proxyConfiguration": { "useApifyProxy": false }
}

Houses and flats around Tokyo under ¥20M, weekly alert: {"propertyTypes": ["land_with_building", "condominium_unit"], "prefectures": ["Tokyo", "Kanagawa", "Saitama", "Chiba"], "maxPriceJpy": 20000000, "changeTracking": "new_only", "maxItems": 1000}. Farmland only, fast list without notice pages: {"propertyTypes": ["farmland"], "includeDetails": false, "maxItems": 1000}.

Output example

{
  "propertyId": "02001-2026-14-2-18420001",
  "propertyCategory": "land",
  "propertyCategoryJa": "土地",
  "propertyTypeJa": "土地",
  "isFarmland": false,
  "prefecture": "千葉県",
  "prefectureEn": "Chiba",
  "municipality": "山武市",
  "estimatedPriceJpy": 110000,
  "listingStatus": "reappraised",
  "mainLandUseJa": "山林",
  "mainLandUseEn": "Forest",
  "mainBuildingTypeJa": null,
  "mainBuildingTypeEn": null,
  "landAreaSqm": 1814,
  "floorAreaSqm": null,
  "taxBureau": "kanto-shinetsu",
  "taxBureauJa": "関東信越国税局",
  "taxOfficeJa": "関東信越国税局",
  "auctionMethod": "period_bid",
  "auctionMethodJa": "期間入札",
  "fiscalYear": 2026,
  "announcementNo": "14号",
  "saleUnitNo": "1842-1",
  "depositRequired": false,
  "depositJpy": 0,
  "bidStartAt": "2027-01-05T09:00:00+09:00",
  "bidEndAt": "2027-01-13T17:00:00+09:00",
  "bidOpeningAt": "2027-01-19T10:00:00+09:00",
  "saleDecisionAt": "2027-02-09T09:00:00+09:00",
  "paymentDeadlineAt": "2027-02-09T14:00:00+09:00",
  "additionalBidStartAt": "2027-01-25T09:00:00+09:00",
  "additionalBidEndAt": "2027-01-28T17:00:00+09:00",
  "nearestAccessJa": "JR(東日本) 総武本線 成東駅 南西方約1.5キロメートル",
  "farmlandCertificateRequired": false,
  "detailFetched": true,
  "changeType": null,
  "previousPriceJpy": null,
  "firstSeenAt": null,
  "detailUrl": "https://www.koubai.nta.go.jp/auctionx/public/hp0201.php?kyoku_no=02001&koubai_nendo=2026&koubai_no=14&koubai_kind=2&baikyaku_no=18420001",
  "source": "出典: 国税庁「公売情報」(https://www.koubai.nta.go.jp/auctionx/public/hp0201.php?kyoku_no=02001&koubai_nendo=2026&koubai_no=14&koubai_kind=2&baikyaku_no=18420001) を加工して作成 / Source: National Tax Agency Japan, Public Auction Information (edited by this Actor)",
  "scrapedAt": "2026-10-10T12:50:00.183Z"
}

Field notes

• municipality is the city (市), Tokyo ward (区), designated-city ward (e.g. 新潟市南区) or district + town/village (e.g. 上水内郡飯綱町). Street, lot and house numbers are dropped on purpose; open detailUrl for the exact location.
• isFarmland follows the NTA farmland search category. On the result card, farmland is printed as 土地, so propertyTypeJa alone does not identify it. farmlandCertificateRequired is read from the notice and can also be true for a few plots in the land category whose land use is 田/畑.
• Detail fields (bidStartAt … farmlandCertificateRequired, taxOfficeJa) are null when includeDetails is false or a notice page failed (detailFetched: false).
• price_changed means the same listing ID now shows a different estimated price. A reappraised property that is re-announced under a new notice gets a new ID and appears as new with listingStatus: "reappraised".
• RUN_REPORT (key-value store) holds per-type counts and a status code; with change tracking, CHANGES lists new, re-priced and removed listing IDs.

How much does it cost?

Pay-per-event: a tiny start charge of $0.00005 (Apify's default Actor Start event, charged once per GB of memory; this Actor runs on 1 GB) plus a per-row price:

Event	What it is	Price
Actor Start (apify-actor-start)	Once per run (per GB of memory)	$0.00005
Result (apify-default-dataset-item)	Each property row returned	$0.003 (FREE and BRONZE plans) · $0.002 (SILVER and above)

The default run (20 rows) costs $0.06 on the FREE plan. All current listings (154 on 2026-10-10) cost about $0.46 on FREE and $0.31 on SILVER. With changeTracking: "new_only", weekly runs after the first return only new or re-priced listings — often none to a few dozen — and you pay only for rows returned. Reading notice pages (includeDetails) costs nothing extra.

Integrations: API, MCP, and AI agents

This Actor is read-only: it only reads the public NTA auction pages, never logs in, never bids, never submits forms and never changes anything on the website. It is safe for AI agents to call autonomously.

API (curl)

curl -X POST "https://api.apify.com/v2/acts/datalab-jp~japan-nta-public-auction/run-sync-get-dataset-items?token=YOUR_APIFY_TOKEN" \
  -H "Content-Type: application/json" -d '{"propertyTypes": ["land_with_building", "condominium_unit", "building", "land", "farmland", "other_real_estate"], "maxItems": 20}'

Python

from apify_client import ApifyClient
client = ApifyClient("YOUR_APIFY_TOKEN")
run = client.actor("datalab-jp/japan-nta-public-auction").call(run_input={"propertyTypes": ["land_with_building", "condominium_unit", "building", "land", "farmland", "other_real_estate"], "maxItems": 20})
items = client.dataset(run["defaultDatasetId"]).list_items().items

JavaScript

import { ApifyClient } from 'apify-client';
const client = new ApifyClient({ token: 'YOUR_APIFY_TOKEN' });
const run = await client.actor('datalab-jp/japan-nta-public-auction').call({ propertyTypes: ['land_with_building', 'condominium_unit', 'building', 'land', 'farmland', 'other_real_estate'], maxItems: 20 });
const { items } = await client.dataset(run.defaultDatasetId).listItems();

The synchronous run-sync-get-dataset-items endpoint waits up to 300 seconds. The default run took about 10 seconds; all 154 listings with notice pages took about 70 seconds in testing.

Use with AI agents (MCP)

Through the Apify MCP server, an agent (Claude, ChatGPT, Cursor, LangChain…) can discover and call this Actor with natural-language intent such as "List Japanese government tax-auction houses in Saitama and their bidding deadlines". Useful arguments for agents: prefectures (English names work, e.g. ["Saitama"]), propertyTypes (e.g. ["land_with_building"]), maxPriceJpy, and maxItems: 1000 for the full list. Dates are ISO 8601 with the JST offset and prices are JPY integers, so the agent does not have to parse Japanese era dates.

Related Actors

Other Japan data Actors by the same developer:

• Japan Scrap Metal Prices – Steel & Non-Ferrous — scrap steel and non-ferrous buying prices from Japanese dealers
• Japan Gold & Silver Prices – Dealer Buy & Retail — gold, silver, platinum and palladium dealer prices
• Japan Trade Show Exhibitor List – JIMTOF, CEATEC — exhibitor lists of Japanese trade shows (company-level data)
• Mercari Japan Scraper – Listings & Item Details — Mercari listings and sold prices

FAQ

Is scraping the NTA auction site legal? The NTA's site terms (https://www.nta.go.jp/chuijiko/copy.htm, checked 2026-10-10) list the public-auction site (koubai.nta.go.jp) among the sites covered by the Public Data License 1.0 (公共データ利用規約 第1.0版), which allows reuse, including commercial reuse, on condition that the source is credited and edited content is marked as edited. Every row carries that credit in source. The site has no robots.txt and no clause against automated access. The Actor reads only publicly listed pages at a low rate (at most 3 parallel requests with pauses) and returns property facts only. Map images on the site are licensed by Zenrin for non-commercial viewing only and are never fetched. You are responsible for using the data in line with applicable law.

Does the output contain personal information? No owner, debtor or occupant names are returned. The location is cut to the municipality, and the free-text remarks of the notice pages (which can describe the owner's circumstances or occupants) are not parsed or stored. Photos and PDF notices are not fetched.

Can I use it through the API? Yes — see the curl, Python and JavaScript examples above. Results can also be exported as JSON, CSV, Excel or sent to webhooks, Google Sheets, Slack and more via Apify integrations.

Can AI agents use this Actor? Yes. It is read-only and returns English field names, ISO dates and JPY integers; see Use with AI agents (MCP) above.

Can foreigners bid? The NTA's rules apply, not this Actor's; check the notice (detailUrl) and the NTA's guidance for participants. Farmland requires a permit under the Agricultural Land Act (the notice asks for a 買受適格証明書), so it is generally not available to buyers who do not farm in Japan.

Why did I get 0 rows? Check RUN_REPORT in the run's key-value store: its status and hint explain it. Common causes: the whole country has only about 150 listings, so a single prefecture or a narrow price band often matches nothing (filters_matched_nothing); other_real_estate is usually empty (no_listings); or, with changeTracking: "new_only", nothing new was published since the last run (no_changes).

How does change tracking work? The Actor stores the listing IDs and prices in a named key-value store in your Apify account (stateStoreName). Each combination of property types and filters has its own snapshot. Listings cut by maxItems or a spending limit are not recorded, so they are reported on a later run instead of being missed. Listings that disappear (sold, withdrawn or closed) are reported only when every list page was read successfully.

Do I need a proxy? No. The NTA site answered direct requests from a Japanese connection and from Apify's datacenter IPs in October 2026. If you enable Apify Proxy without choosing a group, the Actor uses Japanese residential IPs as a precaution.

Disclaimer

Listings are taken from the National Tax Agency's public-auction site and edited by this Actor (fields normalised, translated and shortened). They are provided as-is for information; the official notice at detailUrl and the NTA's auction notices prevail. Auctions can be cancelled or changed at any time. This Actor is not affiliated with or endorsed by the National Tax Agency of Japan. Nothing here is investment, legal or tax advice.

出典: 国税庁「公売情報」（https://www.koubai.nta.go.jp/）を加工して作成

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中文摘要（简体） 本 Actor 汇总日本国税厅（国税庁）“公卖”网站上因欠缴国税而被查封、正在公开拍卖的不动产与农地：物件类型、是否农地、都道府县与市区町村、评估价（最低出价，日元）、地目、土地与建筑面积、投标期间、开标日、保证金和官方公告链接。 可按都道府县、国税局和价格区间筛选，并可每周只输出新增或价格变动的物件；只返回物件事实，不含所有者等个人信息，数据出处为国税厅（经加工）。 注意：购买农地需依《农地法》取得许可；只读、无需编程，可通过 API 或 MCP 供 AI 代理调用。