Yamada Shokai Holdings

What Yamada Shokai Holdings does

Yamada Shokai Holdings Co., Ltd. is a privately-held Nagoya-based holding company established in September 2016 that oversees 10 operating subsidiaries serving the Tokai region of Japan (Aichi, Gifu, and Mie prefectures). The group's core business is life-infrastructure construction and maintenance spanning gas, water, electrical, HVAC, and telecommunications services, delivered through wholly-owned entities including YAMADA SHOKAI Co., Ltd. (the legacy operating company dating to 1906), PROSITE STAFF (skilled-worker dispatch), Kei-Y Auto (vehicle inspection/maintenance), New Wealth (civil engineering), and several specialty electrical and water-environment subsidiaries. The company also operates one overseas subsidiary in Vietnam (YS Design Vietnam, CAD drafting) established in 2020.

The group generated ¥22.4 billion (approximately $145-150M USD) in consolidated revenue for the fiscal year ending March 2025 and employed 838 people as of April 2026. Revenue is generated predominantly on a project/contract basis through professional services (gas/water/electrical construction, civil works, automotive service) and managed services (skilled-worker dispatch). Customers are a long-tail horizontal mix of residential and commercial end users, construction/infrastructure firms requiring labor, and individual/fleet vehicle owners — no single large enterprise customer is disclosed. Pricing is project-by-project and not publicly disclosed.

Beyond traditional infrastructure services, the company operates a Research Co-Creation Group that systematically invests in and co-develops deep-tech solutions across four verticals: Energy (fusion energy via Helical Fusion, virtual power plants via Blue Whale Energy, EV battery circular systems), Infrastructure/Maintenance (drone inspection with Liberaware, wide-area disaster UAV with TERRA LABO), Agriculture/Forestry/Fisheries (ARK closed-loop aquaculture, ShrimpTech JIRCAS), and Living Environment (Rhelixa biological age measurement, Meisters Grid). The group co-invests with regional financial institutions including OKB Capital and Ogaki Kyoritsu Bank and is an LP in the Real Tech Global Fund 2 (UntroD Capital Asia), creating a deal-flow pipeline into the Liverness deep-tech venture ecosystem. Go-to-market is sales-led direct field operations, augmented by event-driven and community-led engagement through industry conferences (Japan Drone, SWITCH Singapore, National Knowledge Manufacturing Conference).

Name

Yamada Shokai Holdings

Legal name

株式会社山田商会otechnoru Holding

Website

https://yamada-hd.co.jp

Company type

Private

Founded year

2016

Operating status

Operating

Short description

Yamada Shokai Holdings is a Nagoya-based private holding company overseeing 10 subsidiaries that deliver gas, water, electrical, HVAC, telecommunications, civil engineering, automotive, and staffing services across Japan's Tokai region, while actively co-investing in deep-tech ventures in energy, infrastructure inspection, disaster response, and aquaculture.

Ownership category

akta.pro rank

Product category

Infrastructure Construction Services

NAICS

Management of Companies and Enterprises (5511), Corporate, Subsidiary, and Regional Managing Offices (551114)

SIC

Electric, Gas & Sanitary Services (4900), Non-Operating Establishments (9995)

akta.pro primary industry

Security, Safety & Fire/Life Safety Management (BPABAAAE)

Keywords

• Infrastructure construction services
• Gas pipeline installation
• Water supply systems
• Building renovation services
• HVAC installation services

Headquarters

HQ city

Nagoya

HQ country

Japan

HQ region

Asia

Offices2 records

Markets served

GTM type

B2B and B2C

Offering type

Services

Cost components

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

Revenue model

1. Infrastructure Construction Services: Gas, water, electrical, HVAC, and telecommunications construction and renovation services provided through subsidiary YAMADA SHOKAI Co., Ltd. and other group companies. Revenue is generated on a project/contract basis for residential, commercial, and municipal customers.
2. Personnel Staffing / Dispatch Services: Staffing and dispatch of skilled workers for gas, water, and electrical industries through PROSITE STAFF Co., Ltd., serving construction and maintenance companies on a recurring contractual basis.
3. Automotive Services: Vehicle inspection, maintenance, parts sales, and leasing through Kei-Y Auto Co., Ltd., serving individual and fleet customers.
4. Civil Engineering Services: Civil works including pipe installation, road paving, and water facility construction through New Wealth Co., Ltd. and other group companies.

Go-to-market motion3 records

Distribution channels3 records

Marketing channels5 records

Core offering

Yamada Shokai Holdings is a holding company that oversees 10 group subsidiaries providing integrated infrastructure construction and maintenance services spanning gas, water, electricity, HVAC, and telecommunications. The group also operates civil engineering, automotive inspection/maintenance, architectural design, and skilled personnel staffing services, primarily serving the Tokai region of Japan.

Product overview

Yamada Shokai Holdings is a holding company structure comprising 11 group companies (10 subsidiaries plus the holding company itself). The group operates life infrastructure businesses including gas/water/electrical construction, renovation, civil engineering, automotive services, and staffing/HR services. Group consolidated sales reached 224 billion yen (March 2025). The holding company also operates a Research Co-Creation Group that focuses on deep-tech collaboration in energy, infrastructure maintenance, agriculture/fisheries, and living environment sectors. The product portfolio consists primarily of physical infrastructure services and B2B construction/maintenance offerings rather than software products.

Differentiator

Problem solved

Functional benefit

Products and services

• Gas Infrastructure Construction Services
• Water Supply and Drainage Construction Services
• Electrical and HVAC Construction Services
• Building Renovation Services
• Civil Engineering Services
• Skilled Personnel Staffing Services
• Automotive Inspection and Maintenance Services
• Architectural Design and Consulting Services
• CAD Drafting and Design Support Services
• Disaster Response and Gas Restoration Services

Quantifiable outcome

• Emergency gas restoration for 12,139 households within days of the 2018 Northern Osaka Earthquake (69 staff dispatched)
• +1 more outcomes

Segments3 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Partnerships

Twelve partnerships are on record, tiered core and minor.

• tonari株式会社 (tonari Inc.)coreStrategic or Co-development Partner · 26 May 2026Tokyo-based startup developing the 'tonari' spatial connection system (life-size, ultra-low latency, always-on communication system). Yamada Shokai HD made an equity investment and installed the tonari system at 4 locations (Head Office President's Office, Head Office Operations Management Dept., Southern Business Office, Gifu Conduit Business Office) to facilitate daily inter-branch communication and knowledge sharing.
• 株式会社リバネス (Liverness Corporation)coreStrategic or Co-development Partner · 11 July 2025Deep-tech venture ecosystem operator. Key co-creation partner for TECH PLANTER, Gifu Tech Planter, Liverness Resilience Project, and National Knowledge Manufacturing Conference. Multiple joint investments and ecosystem programs. Yamada Shokai HD participates as a co-creation partner in multiple initiatives.
• Athlitera株式会社 (Athlitera Corporation)minorStrategic or Co-development Partner · 30 January 2025Developer of dustproof/waterproof portable power supplies. Partnered with Yamada Shokai HD and Nagoya Kizai to develop a new large-capacity portable power supply for gas and water construction sites, eliminating noise, vibration, and exhaust gas from gasoline generators.
• 名古屋器材株式会社 (Nagoya Kizai Co., Ltd.)minorStrategic or Co-development Partner · 24 October 2024Trading company selling generators, safety equipment, and power tools to construction companies in the Tokai region. Partnered with Yamada Shokai HD and Athlitera to develop a new large-capacity portable power supply for decarbonized construction sites.
• Helical Fusion株式会社 (Helical Fusion Co., Ltd.)coreStrategic or Co-development PartnerPartner in the energy sector within the Research Co-Creation Group. Yamada Shokai Holdings collaborates with Helical Fusion on fusion energy research and development as part of its deep-tech open innovation strategy. In July 2025, Yamada Shokai HD, OKB Capital, and Liverness jointly invested in Helical Fusion to support commercialization of helical fusion reactor technology.
• Blue Whale Energy Pte. Ltd.coreStrategic or Co-development PartnerPartner in the energy sector within the Research Co-Creation Group. A Singapore-based startup developing battery-powered virtual power plants (VPP) using sodium-ion batteries. In September 2025, Yamada Shokai HD co-invested with Real Tech Global Fund 2 in Blue Whale Energy.
• 株式会社テラ・ラボ (TERRA LABO Co., Ltd.)coreStrategic or Co-development PartnerPartner in the infrastructure/maintenance sector. Specializes in wide-area disaster response using long-range unmanned aerial vehicles (Terra Dolphin VTOL). Yamada Shokai HD holds a capital stake (J-KISS stock acquisition rights subscribed January 2023) and has formed a research capital alliance for wide-area disaster response operation system R&D. Tokai Branch of Liverness Resilience Project launched together in December 2024.
• 株式会社Liberaware (Liberaware Co., Ltd.)coreStrategic or Co-development PartnerPartner in the infrastructure/maintenance sector. Develops the world's smallest drone (IBIS2) for inspecting hazardous indoor spaces. Business alliance formed October 2024 for joint development of drone-based inspection and DX solutions for aging infrastructure. Demonstration conducted at Ninna-ji Temple (World Heritage Site) in April 2025. Capital partnership via subscription to third-party allocation of new shares in March 2026.
• 株式会社ARK (ARK Inc.)minorStrategic or Co-development PartnerPartner in the agriculture/forestry/fisheries sector. Yamada Shokai HD supported ARK's modular closed-loop land-based aquaculture system 'ARK ZERO' for shrimp farming trials (November 2025).
• ShrimpTech JIRCAS株式会社 (ShrimpTech JIRCAS Inc.)minorStrategic or Co-development PartnerPartner in the agriculture/forestry/fisheries sector, focused on shrimp aquaculture technology.
• 株式会社Rhelixa (Rhelixa Inc.)minorStrategic or Co-development PartnerPartner in the living environment sector. Co-creation partner in the EpiClock Co-Creation Project (May 2025) aimed at realizing a society without fear of aging through biological age measurement and improvement.
• マイスターズグリッド株式会社 (Meisters Grid Co., Ltd.)minorStrategic or Co-development PartnerPartner in the living environment sector within the Research Co-Creation Group.

Scale indicators3 records

Recent moves8 records

Expansion highlights6 records

Broad incumbents

• Sanki Engineering Co., Ltd. Tokyo-listed Japanese facilities engineering company (HVAC, electrical, plumbing) serving commercial, industrial, and healthcare facilities. Closest scaled peer in Japan's integrated facilities engineering space and offers analogous multi-trade infrastructure construction capabilities.
• Kandenko Co., Ltd. Tokyo-listed Japanese electrical infrastructure contractor focused on power transmission, substations, and telecommunications construction. Closest comparable peer to Yamada's Z・NAG and Matsumoto Elec electrical subsidiaries in the Japanese market.
• Kyudenko Corporation: Tokyo-listed Japanese electrical and air-conditioning engineering contractor with multi-trade capabilities comparable to Yamada's Z・NAG operations. Similar scale and end-market exposure in Japan's electrical infrastructure construction sector.
• Yurtec Corporation: Tokyo-listed Japanese electrical construction and infrastructure services firm operating across power, telecommunications, and civil engineering. Comparable to Yamada's electrical/civil engineering subsidiaries in scope and regional infrastructure focus.
• Takasago Thermal Engineering Co., Ltd. Tokyo-listed HVAC engineering firm specializing in heating, ventilation, and air conditioning for industrial and commercial facilities. Comparable as a facilities infrastructure engineering firm serving Japanese commercial/industrial end markets.
• Nihon Densetsu Kogyo Co., Ltd. (NDK): Tokyo-listed Japanese electrical and communications infrastructure construction company with comparable end markets and multi-trade capabilities. Comparable to Yamada's electrical and telecommunications infrastructure subsidiaries.

Direct peers

• Daiei Setsubi Kogyo Co., Ltd. Japanese mid-sized facilities infrastructure firm (HVAC, plumbing, electrical) operating across Japanese regional markets. Directly comparable to Yamada's Hokushin water/HVAC/fire-prevention and Dowa water renovation operations.
• Nippon Air Conditioning Services Co., Ltd. (NACS): Tokyo-listed Japanese HVAC and facility services firm specializing in air-conditioning installation and maintenance. Closest pure-services comparable to Yamada's Hokushin plumbing/HVAC subsidiary in the Japanese market.
• Tokyo Gas Engineering Solutions Corporation: Tokyo Gas Group engineering subsidiary focused on gas infrastructure construction and energy solutions. Most direct comparable to Yamada Shokai Co., Ltd.'s core gas-construction business in Japan's gas utility infrastructure market.
• Toko Electrical Construction Co., Ltd. Tokyo-listed Japanese electrical and information infrastructure construction firm of similar scale to Yamada's electrical construction subsidiaries. Operates in adjacent Japanese infrastructure trade areas with comparable revenue base.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

Revenue estimate

Valuation estimate

Number of profiles

Profiles3 records

Subsidiaries10 records

Funding overview

Funding rounds

Investors

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

M&A

Investments3 records

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

Frequently asked questions about Yamada Shokai Holdings