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株式会社西海建設

Nagasaki, Japan

Active
Registration numberT2310001000619
TypeCorporation
Registered name株式会社西海建設
Address長崎県長崎市興善町2番8号
2-8 Kozemmachi, Nagasaki-shi, Nagasaki 850-0032, JAPAN
Corporate number2310001000619
Corporate number assigned on2015-10-05
Invoice registered on2023-10-01

Invoice registration date = when the T-number took effect, not the founding date.

Corporate registry record

Entity typeKabushiki Kaisha (stock company)
Reading (furigana)サイカイケンセツ
Reading (romaji)Saikaikensetsu
English name (unofficial)Saikai Kensetsu
Postal code850-0032

Source: NTA Corporate Number Publication Site, refreshed daily.

Company profile (gBizINFO)

Business linesD:建設業
Employees202

Source: gBizINFO (METI), refreshed monthly — edited extract by LoreaTec. Figures are as filed by each company.

Government contract awards (GEPS)

No public national-government (GEPS) award records for this company in the open data (FY2013 to date).

Browse the awards database →

出典:調達ポータル(https://www.p-portal.go.jp/)

Payments from national budget programmes (行政事業レビュー)

Ministry review sheets report this company as a payee of 2 programmes (3 lines, sheet years 2024–2025; total ¥725.3M).

2025
FY2024
水産基盤整備事業(直轄) ¥173.7M (水産庁)
水産資源の生産力を向上させ、水産物の安定供給の確保を図るため、保護礁及び増殖礁等の整備(フロンティア漁場整備事業)を実施。
2024
FY2023
海岸事業(農地) ¥400.2M (農林水産省)
若築建設株式会社九州支店/319,550千円/他43件
2024
FY2023
水産基盤整備事業(直轄) ¥151.4M (水産庁)
水産資源の生産力を向上させ、水産物の安定供給の確保を図るため、保護礁及び増殖礁等の整備(フロンティア漁場整備事業)を実施。

Contract details (excerpt): 対馬海峡地区マウンド礁のブロックの製作(その2) ¥173.7M・一般競争契約(総合評価) · bidders 1 / ・工事の実施 ¥252.9M・一般競争契約(総合評価) · bidders 6 / マウンド礁ブロックの製作 ¥151.4M・一般競争契約(総合評価) · bidders 3 / ・工事の実施 ¥147.3M・一般競争契約(総合評価) · bidders 9

Source: 行政事業レビュー見える化サイト (Cabinet Secretariat, PDL 1.0) — edited extract by LoreaTec. A sheet year describes the previous fiscal year’s spending. Programme database →

Licenses, registrations & certifications (gBizINFO)

2023-03-28Government bidding qualification (統一資格) 企業 / 施設課経理係 (Ministry of Justice)
2021-04-01Government bidding qualification (統一資格) 企業 / 施設課経理係 (Ministry of Justice)
2019-04-01Government bidding qualification (統一資格) 企業 / 施設課経理係 (Ministry of Justice)

Source: gBizINFO (METI) notifications & certifications dataset, refreshed monthly. Some licenses (e.g. construction 建設業許可, electrician registrations) are not part of the gBizINFO dataset.

How to cite this page

Data via LoreaTec BizSearch (https://bizsearch.loreatec.jp/t2310001000619) — Source: National Tax Agency corporate-number and qualified-invoice registries. Retrieved 2026-11-08.

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