九州建设集团

What 九州建设集团 does

九州建設株式会社 (Kyushu Kensetsu K.K.) is a Fukuoka-headquartered regional general contractor founded in 1894 (Meiji 27), operating primarily across the Kyushu and Okinawa regions of Japan as part of the 徳倉建設グループ (Tokura Construction Group). The company runs three core service lines: Architecture Services covering design and construction of residential, commercial, healthcare, educational, religious, and industrial facilities; Civil Engineering Services for public infrastructure including roads, rivers, harbors, railways, and water systems; and PPP/PFI Services for public-private partnership projects delivered in coordination with its parent group, which holds 20+ PPP/PFI deliveries since 2004. A supplementary Refine/Renovation service module addresses building lifecycle extension and sustainability through regeneration work.

Technically, Kyushu Kensetsu differentiates through proprietary civil engineering methods (PSR工法, PP工法, LSS工法 for recycled soil, ES工法 for greening), drone surveying and unmanned construction equipment adoption, and a quality management department staffed by first-class architects that conducts independent site inspections. The company operates six maintenance bases across Kyushu (Nagasaki, Kumamoto, Oita, Saga, Sasebo, Chikuho) to support a 10-year post-completion inspection regime.

The business model is sales-led, direct-to-client, with project-by-project (個別見積) contracting to government/public agencies (competitive bidding or comprehensive evaluation) and private enterprises across Kyushu. Revenue streams span one-time architecture and civil engineering contracts, professional services for PPP/PFI advisory/execution, and recurring post-completion maintenance. The current President and Representative Director is Iyama Hiroshi (井山裕), appointed in 2023.

Name

九州建设集团

Legal name

九州建設株式会社

Website

https://q-shu.co.jp

Company type

Private

Founded year

1894

Operating status

Operating

Headcount range

11–50 employees

Short description

九州建設株式会社 is a 130-year-old Fukuoka-based regional general contractor delivering architecture, civil engineering, and PPP/PFI services to government and private enterprise across the Kyushu and Okinawa regions of Japan.

Ownership category

akta.pro rank

Product category

Construction and Civil Engineering Services

NAICS

Commercial and Institutional Building Construction (236220), Utility System Construction (2371), Construction (23)

SIC

General Bldg Contractors - Nonresidential Bldgs (1540), Heavy Construction Other Than Bldg Const - Contractors (1600), Operative Builders (1531)

akta.pro primary industry

Construction Program Management (Multi-site/Portfolio) (IMAFAAAF)

akta.pro secondary industries

Office & Corporate Building Construction (IMAFACAA), Public Works Departments (Streets, Bridges, Stormwater, Fleet, Maintenance) (BPAIALAD)

Keywords

• General construction contracting
• Civil engineering services
• Building construction services
• PPP PFI projects
• Building renovation services

Headquarters

HQ city

福岡市博多区

HQ country

Japan

HQ region

Asia

Offices7 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Supply Chain, Technology or R&D, Marketing or Sales, Infrastructure

Revenue model

1. 建設工事請負（建築）: マンション、オフィスビル、商業施設、学校・病院などの公共施設、宗教施設、工場などあらゆる建築物の設計・施工を請負。施工からメンテナンスまで一貫対応。
2. 建設工事請負（土木）: 道路・河川・湾岸・空港・鉄道・上下水道の公共工事。グループの総力で公共工事に取り組む。
3. PPP/PFI事業: 德倉建設グループのノウハウ提供により、九州・沖縄エリアを中心にPPP/PFI事業（公営住宅・給食センター等）に取り組む。
4. リファイン（リノベーショ工事）: リフォーム・リノベーション・リニューアル工事。建物を長く使い続けることで経済面と環境面の両面で貢献。

Go-to-market motion1 record

Distribution channels2 records

Marketing channels5 records

Core offering

九州建設株式会社 is a Kyushu-based general contractor providing integrated architecture, civil engineering, and PPP/PFI construction services. The company handles design, construction, and long-term maintenance for public infrastructure (roads, rivers, harbors, airports, railways) and private buildings (residential, commercial, office, healthcare, educational, religious, industrial facilities), with proprietary construction methods and an in-house quality control inspection system.

Product overview

九州建設株式会社 is a regional general contractor offering integrated construction services across Kyushu and Okinawa. The company operates three core service lines: (1) Architecture Services covering design and construction of residential, commercial, office, healthcare, educational, and religious facilities with in-house quality control; (2) Civil Engineering Services for public infrastructure projects using advanced construction methods including drone and unmanned equipment; and (3) PPP/PFI Services as part of the Tokura Construction Group for public-private partnership projects. A supplementary Refine/Renovation service module addresses sustainability through building regeneration and SDG initiatives. The company maintains maintenance bases in 6 locations across Kyushu to support its constructed buildings.

Differentiator

Problem solved

Functional benefit

Products and services

• Architecture Services (建築事業)

Quantifiable outcome

• 20件以上のPPP/PFI事業実績（德倉建設グループ全体）
• +2 more outcomes

Named customers14 records

Segments4 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

Three partnerships are on record, tiered core and minor.

• 德倉建設株式会社coreStrategic or Co-development Partner · 19 October 2024德倉建設株式会社のグループ企業として、PPP/PFI事業の совмест implementationを行う。 德倉建設は2004年から20件以上のPPP/PFI実績を持ち、九州建設は主に九州・沖縄エリアでそのノウハウを提供받아活動。1888年の創業以来のグループ連携。
• otonari福岡SUNSminorGTM or Marketing Partner · 1 February 2022福岡のバスケチームX1SUPER升格に伴い、ユ Form赞助契約を締結。チーム名「福岡SUNS」のユニホームスポンサーとして「九州から日本一」を目指すチームを支援。
• 株式会社グッピーズminorOthers · 1 January 2022スマホのヘルスケアアプリを利用した步行イベント「スマホde東海道五十三次ウォークラリー」に参加。7名で参加し第2位、入賞。社員の健康づくり・コミュニケーション促進目的。

Scale indicators6 records

Recent moves7 records

Expansion highlights6 records

Direct peers

• Okumura Corporation (奥村組): Long-established Japanese general contractor focused on architecture and civil engineering with strong public-sector exposure. Closely comparable to Kyushu Kensetsu in service mix, customer segments, and historic operating profile.
• Matsui Construction Co., Ltd. (松井建設): Mid-tier Japanese general contractor with a strong track record in architecture, civil engineering, and renovation services. Comparable in size and integrated offering profile to Kyushu Kensetsu, serving similar B2B and public-sector clients.
• Zenitaka Corporation (錢高組): Mid-sized Japanese general contractor founded in 1705 with integrated architecture, civil engineering, and PPP capabilities. Highly comparable to Kyushu Kensetsu in scale, service mix, and historical regional positioning.
• Tokura Kensetsu Corporation (徳倉建設): Parent company within the Tokura Kensetsu Group; a diversified Japanese general contractor with national reach. Direct peer because Kyushu Kensetsu operates as the group's Kyushu/Okinawa regional execution arm, sharing the same PPP/PFI project pipeline and customer base.
• Daiho Construction Co., Ltd. (大豊建設): Mid-sized Japanese general contractor specializing in architecture and civil engineering with notable civil engineering capability. Comparable to Kyushu Kensetsu in scale and service mix, particularly for public-sector infrastructure projects.
• Toa Corporation (東亜建設工業): Japanese construction company with strong civil engineering and infrastructure focus, including port, harbor, and public works. Comparable to Kyushu Kensetsu's civil engineering service line, particularly for roads, harbors, airports, and water systems.
• Konoike Construction Co., Ltd. (鴻池組): Mid-sized Japanese general contractor with diversified architecture, civil engineering, and facility operations. Comparable to Kyushu Kensetsu in scale, service breadth, and integrated project delivery profile.
• Asanuma Corporation (淺沼組): Mid-sized Japanese general contractor with diversified architecture, civil engineering, and renovation services. Comparable in scale and integrated offering to Kyushu Kensetsu, serving both public and private sector clients.

Broad incumbents

• Toda Corporation (戸田建設): Major Japanese general contractor with national reach across architecture, civil engineering, and PPP/PFI. Comparable in service mix to Kyushu Kensetsu but operates at significantly larger scale with broader geographic coverage.
• Penta-Ocean Construction Co., Ltd. (五洋建設): Larger Japanese construction company with leading civil engineering capability, particularly in marine, port, and infrastructure works. Comparable to Kyushu Kensetsu's civil engineering business but operates at national/international scale and broader scope.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks5 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/%E4%B9%9D%E5%B7%9E%E5%BB%BA%E8%AE%BE%E9%9B%86%E5%9B%A2

Compliance10 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about 九州建设集团