Action summary

Company

岩城建設株式会社Japanese original

Original: 岩城建設株式会社

Corporate Number: 6500001012995

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

26 May 2023

Issuing authority

Ehime Prefecture

愛媛県

Industry context

建設業者

Violation

The former representative director of Ishiki Construction Co., Ltd. and a former director received a conviction for obstructing fair bidding processes under the Public Contract Act, Article 28, Paragraph 1, Item 3, by using confidential information obtained from municipal officials to secure contracts through fraudulent means in the bidding for the Nagasaki Port floating pier renovation and painting removal projects in 2020 and 2021, respectively. The court sentenced them to one year in prison, suspended for three years. As a result, Ehime Prefecture issued a one-year suspension of business operations in civil engineering and steel structure work related to public projects, effective from June 2, 2023, to June 1, 2024. The company’s main office is located in Kamijima Town, Ochi District, Ehime Prefecture.

Business location and permit details

Business location address

愛媛県越智郡上島町

Representative

松浦 尚

Permit / registration number

愛媛県知事（特-2）第1181号

Permitted business types

Civil engineering works, Scaffolding, earthwork, and concrete works, Stone works, Steel structure works, Paving works, Dredging works, Water facilities works, Demolition works

Legal articles

建設業法第28条第3項（同条第１項第３号該当）

Cause of action

岩城建設株式会社の前代表取締役は、上島町が令和２年８月27日に入札を執行した「長江港浮桟橋改修工事」に関し、また、同社の前取締役は、同町が令和３年５月26日に入札を執行した「長江港浮桟橋塗装除去工事」に関し、それぞれ当時の町職員から秘密事項である予定価格やそれと同額である工事価格などの教示を受けて、同社にそ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（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=869

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": "9eb7eff6-db2d-4d81-987e-27d97bd2eeaa",
    "url": "https://regbase.jp/en/enforcement/kensetsu-gyoho-yan-cheng-jian-she-20230526",
    "company_name_original": "岩城建設株式会社",
    "company_name_registry": "岩城建設株式会社",
    "corporate_number": "6500001012995",
    "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-yan-cheng-jian-she-20230526",
    "officialSourceUrl": "https://www.mlit.go.jp/nega-inf/cgi-bin/search.cgi?jigyoubunya=kensetugyousya&EID=search&no=869",
    "officialDocumentUrl": null,
    "archiveUrl": null,
    "archivedSourceUrl": null,
    "archiveCapturedAt": null,
    "extractedAt": "2026-07-17T11:56:25.97+00:00",
    "translatedAt": "2026-07-18T15:00:24.764+00:00",
    "evidenceCheckedAt": "2026-07-17T08:51:45.822+00:00",
    "generatedAt": "2026-07-24T15:21:01.648Z"
  },
  "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.