Action summary

Company

関東建設工業株式会社Japanese original

Original: 関東建設工業株式会社

Corporate Number: 4070001018972

Entity match

Confirmed entity match95/100Machine checked

Normalized Japanese name matched to a company profile with Corporate Number

Matched by normalized Japanese company name to an enriched company profile with a Corporate Number.

Governing law

Construction Business Act

建設業法

Action type

Business Suspension

営業停止

Action date

27 April 2026

Issuing authority

Kantō Regional Development Bureau

関東地方整備局

Industry context

建設業者

Violation

A former employee of Kanto Construction Industry Co., Ltd. was convicted by the Saitama District Court on December 24, 2023, of obstructing public contract auctions under the crime of interfering with public contract auctions (Article 28, Paragraph 1, Item 2 of the Construction Business Act). The conviction pertains to the bid for the 'Kiryuu City New Main Office Building Construction Work' conducted by Kiryuu City, Gunma Prefecture, on October 19, 2022. The court sentenced the individual to one year in prison, with a three-year probation, and the sentence was finalized. This violation has been recognized as grounds for suspension of business activities. The suspension applies to construction activities related to public works in Ibaraki, Tochigi, Gunma, Saitama, Chiba, Tokyo, Kanagawa, Yamanashi, and Nagano Prefectures, specifically for general construction work involving public contracts. The suspension period is from May 12, 2026, to July 10, 2026, totaling 60 days.

Business location and permit details

Business location address

群馬県太田市飯田町１５４７ ＯＴＡスクエアビル７Ｆ

Representative

髙橋 明

Permit / registration number

国土交通大臣許可(特-3）第008420号

Permitted business types

Civil engineering works, Building works, Scaffolding, earthwork, and concrete works, Electrical works, Pipe works, Steel structure works, Paving works, Water facilities works, Demolition works

Legal articles

建設業法第２８条第３項（同条第１項第２号該当）

Cause of action

関東建設工業株式会社の元社員は、群馬県桐生市が令和４年１０月１９日に入札を執行した「桐生市新本庁舎建設工事」の入札に関し、偽計を用いて、公の入札で契約を締結するためのものの公正を害すべき行為をしたとして、令和７年１２月２４日にさいたま地方裁判所から公契約関係競売等妨害罪により懲役１年（執行猶予３年）の判決を受け、その刑が確定している。 このことが建設業法第２８条第１項第２号に該当すると認められる。

Overview page

https://www.mlit.go.jp/nega-inf/cgi-bin/search.cgi?jigyoubunya=kensetugyousya&EID=search&no=2142

These fields are extracted from the original Japanese disclosure or linked overview pages when available.

This context is an operational aid for review workflows, not a credit opinion or legal conclusion.

Evidence pack

{
  "record": {
    "id": "1e764e86-3414-4f2f-9a58-bf04d9ee699b",
    "url": "https://regbase.jp/en/enforcement/kensetsu-gyoho-guan-dong-jian-she-gong-ye-20260427",
    "company_name_original": "関東建設工業株式会社",
    "company_name_registry": "関東建設工業株式会社",
    "corporate_number": "4070001018972",
    "law": {
      "ja": "建設業法",
      "en": "Construction Business Act"
    },
    "action_type": {
      "ja": "営業停止",
      "en": "Business Suspension"
    },
    "authority": {
      "ja": "関東地方整備局",
      "en": "Kantō Regional Development Bureau"
    }
  },
  "entity_match": {
    "status": "confirmed",
    "confidence": 95,
    "method": "normalized_name_with_corporate_number",
    "method_label": "Normalized Japanese name matched to a company profile with Corporate Number",
    "notes": "Matched by normalized Japanese company name to an enriched company profile with a Corporate Number."
  },
  "review": {
    "status": "machine_reviewed",
    "label": "Machine checked"
  },
  "compliance_context": {
    "severity": "Context needed",
    "actionMeaning": "This is a public Japanese regulatory disclosure. The exact legal effect depends on the cited source and regulator.",
    "practicalNote": "Review the original Japanese source and determine relevance to your counterparty-risk workflow.",
    "lawContext": "Construction business law covering licensing, contractor obligations, and public-interest rules for construction work."
  },
  "evidence": {
    "recordUrl": "https://regbase.jp/en/enforcement/kensetsu-gyoho-guan-dong-jian-she-gong-ye-20260427",
    "officialSourceUrl": "https://www.mlit.go.jp/nega-inf/cgi-bin/search.cgi?jigyoubunya=kensetugyousya&EID=search&no=2142",
    "archiveUrl": "https://kiroku.today/view/547de2bad9r6h33s",
    "archiveCapturedAt": "2026-05-04T12:30:47.923+00:00",
    "extractedAt": "2026-05-04T06:38:37.253+00:00",
    "translatedAt": "2026-07-06T07:52:04.705+00:00",
    "evidenceCheckedAt": "2026-05-04T06:38:37.253+00:00",
    "generatedAt": "2026-07-11T05:09:26.406Z"
  },
  "limitations": [
    "RegBase aggregates public Japanese government disclosures and does not provide a credit opinion.",
    "English summaries are provided for reference. The original Japanese source is authoritative.",
    "Possible or unresolved entity matches should be manually verified before use in a decision."
  ]
}

The original Japanese disclosure is the authoritative record. Use possible or unresolved matches only as leads for manual review.