Enforcement record

Business Suspension against 株式会社久保建設

株式会社久保建設 (Construction Business Act)

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Construction Business ActEhime PrefectureConfirmed entity match10 September 2025

Action type

Business Suspension

Law

Construction Business Act

Authority

Ehime Prefecture

Action date

10 September 2025

Current page: Enforcement record

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Source verification

Public-source and preservation status

Publishing authority: Ehime Prefecture
Official source URL: Recorded by RegBase
Entity match: Confirmed against the current entity-resolution policy
Kiroku preservation: Archive not completed

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/api/v1/enforcements?corporate_number=3500001007197&limit=10

Open JSON Specs

Action summary

Company: 株式会社久保建設Japanese original
Original: 株式会社久保建設
Corporate Number: 3500001007197
Entity match: Confirmed entity match100/100Machine checked
source_corporate_number_nta_current_name
国税庁法人番号データとの独立照合で対象法人を確認しました（source_corporate_number_nta_current_name）。
Governing law: Construction Business Act
建設業法
Action type: Business Suspension
営業停止
Action date: 10 September 2025
Issuing authority: Ehime Prefecture
愛媛県
Industry context: 建設業者

Violation

Machine-translated summary — verify against original

The former representative director of Kubo Construction was convicted of obstructing fair public procurement processes under the Act against Unjustifiable Premiums and Misleading Representations, related to two construction projects in Ehime Prefecture. He received confidential information from a former Ehime Prefecture official regarding direct construction costs and survey standard prices, which he used to secure the contracts through fraudulent means. He was sentenced to 1 year and 6 months in prison, with a 3-year suspended sentence, and the sentence was finalized. This conduct falls under Article 28, Paragraph 1, Item 3 of the Construction Business Act.

Show original Japanese text

株式会社久保建設の元代表取締役は、愛媛県が入札を執行した２件の工事に関し、当時の愛媛県職員から秘密事項である直接工事費及び調査基準価格の教示を受けて、同社にこれらの工事を落札させ、もって偽計を用いて、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、公契約関係競売入札妨害の罪により、懲役１年６月（執行猶予３年）の判決を受け、その刑が確定した。このことは、建設業法第28条第１項第３号に該当する。

Business location and permit details

Business location address: 愛媛県久万高原町
Representative: 久保千鶴
Permit / registration number: 愛媛県知事(特－3)第2028号
Permitted business types: Civil engineering works, Scaffolding, earthwork, and concrete works, Steel structure works, Paving works, Water facilities works, Demolition works
Legal articles: 建設業法第28条第3項（同法第1項第3号該当）
Cause of action: 株式会社久保建設の元代表取締役は、愛媛県が入札を執行した２件の工事に関し、当時の愛媛県職員から秘密事項である直接工事費及び調査基準価格の教示を受けて、同社にこれらの工事を落札させ、もって偽計を用いて、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、公契約関係競売入札妨害の罪により、懲役１年６月（執行猶予３年）の判決を受け、その刑が確定した。このことは、建設業法第28条第１項第３号に該当する。
Overview page: https://www.mlit.go.jp/nega-inf/cgi-bin/search.cgi?jigyoubunya=kensetugyousya&EID=search&no=1764

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

Compliance context

Context needed

This is a public Japanese regulatory disclosure. The exact legal effect depends on the cited source and regulator.

Construction business law covering licensing, contractor obligations, and public-interest rules for construction work.

Review the original Japanese source and determine relevance to your counterparty-risk workflow.

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

Open original sources and verification detailsOfficial URL, direct PDF, and Kiroku archive

Original Ehime Prefecture source (Japanese)

Extracted at: 2026-08-31T15:36:12.618+00:00
Evidence checked: 2026-08-31T15:36:12.238+00:00
Archive captured: Not archived

Show audit JSON

{
  "record": {
    "id": "01ae85a7-53d3-4471-ad08-7928b37c966b",
    "url": "https://regbase.jp/en/enforcement/kensetsu-gyoho-jiu-bao-jian-she-20250910",
    "company_name_original": "株式会社久保建設",
    "company_name_registry": "株式会社久保建設",
    "corporate_number": "3500001007197",
    "law": {
      "ja": "建設業法",
      "en": "Construction Business Act"
    },
    "action_type": {
      "ja": "営業停止",
      "en": "Business Suspension"
    },
    "authority": {
      "ja": "愛媛県",
      "en": "Ehime Prefecture"
    }
  },
  "entity_match": {
    "status": "confirmed",
    "confidence": 100,
    "method": "source_corporate_number_nta_current_name",
    "method_label": "source_corporate_number_nta_current_name",
    "notes": "国税庁法人番号データとの独立照合で対象法人を確認しました（source_corporate_number_nta_current_name）。"
  },
  "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-jiu-bao-jian-she-20250910",
    "officialSourceUrl": "https://www.mlit.go.jp/nega-inf/cgi-bin/search.cgi?jigyoubunya=kensetugyousya&EID=search&no=1764",
    "officialDocumentUrl": null,
    "archiveUrl": null,
    "archivedSourceUrl": null,
    "archiveCapturedAt": null,
    "extractedAt": "2026-08-31T15:36:12.618+00:00",
    "translatedAt": "2026-05-01T07:39:19.73+00:00",
    "evidenceCheckedAt": "2026-08-31T15:36:12.238+00:00",
    "generatedAt": "2026-09-07T18:19:51.555Z"
  },
  "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.

Language

日本語版を見る (Japanese)

Company info

English name: 株式会社久保建設 Japanese original
Japanese name: 株式会社久保建設
Corporate Number: 3500001007197
Registered address: 愛媛県上浮穴郡久万高原町二名甲１１６６番地１

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About this recordAggregated and translated from public Japanese government disclosures. The English text is for reference only — authoritative content is the linked Japanese source.