Action summary

Company

西進建設株式会社Japanese original

Original: 西進建設株式会社

Corporate Number: 9120001196180

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

19 December 2024

Issuing authority

Osaka Prefecture

大阪府

Industry context

建設業者

Violation

The construction company engaged in misconduct regarding public construction bidding and contract procedures by preparing a work cost breakdown sheet for Nikken Hoken Kogyo Co., Ltd., G-Tech Co., Ltd., and Art Kensou Co., Ltd., submitting it to Osaka City, acting as their bidding agent, and exchanging related information with other companies before the bid. These actions violated Article 4, Item 2, which states that bidders must independently determine their bid prices without consulting other bidders about bidding intentions, prices (including bid guarantee amounts), or related documents, and Article 4, Item 3, which prohibits intentionally disclosing bidding intentions or prices to other bidders before the award decision.

Business location and permit details

Business location address

大阪府大阪市城東区諏訪四丁目17番１―202号

Representative

石井 崇亮

Permit / registration number

大阪府知事許可（般－４）第147526号

Permitted business types

Civil engineering works, Building works, Carpentry works, Plastering works, Scaffolding, earthwork, and concrete works, Stone works, Roof works, Pipe works, Tile, brick, and block works, Steel structure works, Reinforcing bar works, Paving works, しゆ, Sheet-metal works, Glass works, Painting works, Waterproofing works, Interior finishing works, Thermal insulation works, Fittings works, Water facilities works, Demolition works

Legal articles

建設業法第28条第３項

Cause of action

当該建設業者は、大阪市の発注する建設工事の請負契約に係る一般競争入札において、当該建設業者が日建保全工業株式会社、株式会社ジィテック及び株式会社アート建装が大阪市に提出すべき工事費内訳書を作成し、同社の入札を代行し、及び入札前にこれに関連する情報を他社と交換し、これらのことにより大阪市競争入札参加者心得第４条第２号の「他の入札参加者と入札意思、入札価格（入札保証金の金額を含む。）又は入札書、工事費内訳書その他大阪市に提出する書類（以下「入札書等」という。）についていかなる相談も行わず、独自に入札価格を定めなければならない。」及び同条第３号の「落札者の決定前に、他の入札参加者に対して入札意思、入札価格（入札保証金の金額を含む。）、入札書等を意図的に開示してはならない。」との規定に違反するなど、公共工事の入札及び契約手続について不正行為等を行った。

Overview page

https://www.mlit.go.jp/nega-inf/cgi-bin/search.cgi?jigyoubunya=kensetugyousya&EID=search&no=1394

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": "cd4e495d-711e-4471-9e95-6ae39b3eaf09",
    "url": "https://regbase.jp/en/enforcement/kensetsu-gyoho-xi-jin-jian-she-20241219",
    "company_name_original": "西進建設株式会社",
    "company_name_registry": "西進建設株式会社",
    "corporate_number": "9120001196180",
    "law": {
      "ja": "建設業法",
      "en": "Construction Business Act"
    },
    "action_type": {
      "ja": "営業停止",
      "en": "Business Suspension"
    },
    "authority": {
      "ja": "大阪府",
      "en": "Osaka 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-xi-jin-jian-she-20241219",
    "officialSourceUrl": "https://www.mlit.go.jp/nega-inf/cgi-bin/search.cgi?jigyoubunya=kensetugyousya&EID=search&no=1394",
    "officialDocumentUrl": null,
    "archiveUrl": "https://kiroku.today/a/860b18d2c0i5ewsw",
    "archivedSourceUrl": "https://www.mlit.go.jp/nega-inf/cgi-bin/search.cgi?jigyoubunya=kensetugyousya&EID=search&no=1394",
    "archiveCapturedAt": "2026-07-12T18:52:07.52357+00:00",
    "extractedAt": "2026-07-17T08:39:50.638+00:00",
    "translatedAt": "2026-05-01T07:55:19.52+00:00",
    "evidenceCheckedAt": "2026-07-17T08:39:50.586+00:00",
    "generatedAt": "2026-07-24T14:05:28.491Z"
  },
  "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.