Enforcement record
Business Suspension against 岡本建設工業株式会社
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Action type
Business Suspension
Law
Construction Business Act
Authority
Osaka Prefecture
Action date
13 June 2024
Current page: Enforcement record
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Public-source and preservation status
- Publishing authority
- Osaka Prefecture
- Official source URL
- Recorded by RegBase
- Entity match
- Confirmed against the current entity-resolution policy
- Kiroku preservation
- Queued for preservation
- Captured: Jul 13, 2026, 04:41 AM JST
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Action summary
- Company
- 岡本建設工業株式会社Japanese originalOriginal: 岡本建設工業株式会社Corporate Number: 9120001027220
- Entity match
- Confirmed entity match100/100Machine checkedsource_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
- 13 June 2024
- Issuing authority
- Osaka Prefecture大阪府
- Industry context
- 建設業者
Violation
The construction company participated in a general competitive bidding process for a construction contract ordered by Osaka Prefecture in Osaka City. They applied for bids from Tamai Corporation, the construction company, and Yutaka Corporation using the same IP address. Subsequently, Tamai Corporation and Yutaka Corporation submitted bids from the same IP address. The bid documents for these four companies, including the construction company and Renuve Daito Corporation, contained identical direct construction costs in their cost breakdown sheets. This violated Article 3, Paragraph 3 of the Osaka Prefecture Electronic Bidding Rules, which states that bidders must not disclose bid prices or cost breakdown details to other bidders before the winner is decided. These actions constituted misconduct regarding the bidding and contract procedures for public works.
Show original Japanese text
当該建設業者は、大阪市内の大阪府発注の建設工事の請負契約に係る一般競争入札において、同一のIPアドレスより株式会社タマイ、当該建設業者及び株式会社ユタカが入札参加申請を行った上、同一のIPアドレスより株式会社タマイ及び株式会社ユタカが入札を行い、当該建設業者及びリノヴェ大都株式会社を含めこれら４社の入札書に添付された工事費内訳書記載の直接工事費を全く同一とし、大阪府建設工事電子入札心得第３条第３項の「入札参加者は、落札者の決定前に、他の入札参加者に対して入札価格又は工事費内訳書の内容を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。
Business location and permit details
- Business location address
- 大阪府大阪市大正区南恩加島五丁目８番12号
- Representative
- 山下 亮
- Permit / registration number
- 大阪府知事許可（般－３）第10612号
- Permitted business types
- Civil engineering works, Building works, Carpentry works, Roof works, Tile, brick, and block works, Interior finishing works
- Legal articles
- 建設業法第28条第３項
- Cause of action
- 当該建設業者は、大阪市内の大阪府発注の建設工事の請負契約に係る一般競争入札において、同一のIPアドレスより株式会社タマイ、当該建設業者及び株式会社ユタカが入札参加申請を行った上、同一のIPアドレスより株式会社タマイ及び株式会社ユタカが入札を行い、当該建設業者及びリノヴェ大都株式会社を含めこれら４社の入札書に添付された工事費内訳書記載の直接工事費を全く同一とし、大阪府建設工事電子入札心得第３条第３項の「入札参加者は、落札者の決定前に、他の入札参加者に対して入札価格又は工事費内訳書の内容を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=1026
These fields are extracted from the original Japanese disclosure or linked overview pages when available.
Compliance context
Context neededThis 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.
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This context is an operational aid for review workflows, not a credit opinion or legal conclusion.
Language
日本語版を見る (Japanese)Company info
- English name
- 岡本建設工業株式会社 Japanese original
- Japanese name
- 岡本建設工業株式会社
- Corporate Number
- 9120001027220
- Registered address
- 大阪府大阪市大正区南恩加島５丁目８番１２号
Recent records in the same industry
About this recordAggregated and translated from public Japanese government disclosures. The English text is for reference only — authoritative content is the linked Japanese source.