What 大和工業株式会社 does

大和工業株式会社 (Yamatokogyo Co., Ltd.) is a privately-held, family-controlled construction and industrial services firm headquartered in Sendai City, Miyagi Prefecture, Japan. Founded on August 7, 1970 (Showa 45) with ¥88.8 million in paid-in capital, the company is led by Chairman Takahashi Akira (高橋章) and President Takahashi Daisuke (高橋大助). The firm operates an unusually diversified service stack for a sub-scale operator: general civil engineering and building construction, demolition, large-scale heavy machinery civil works, renovation, environmental consulting including low-level radioactive waste advisory, licensed industrial waste disposal and collection/transport, custom machinery fabrication, vehicle and equipment maintenance, construction machinery sales, general cargo transport, equipment rental, marine/vessel operations, and mountain sand and recycled concrete (RC-40) aggregate sales.

The underlying technology base is conventional heavy industrial equipment rather than software or digital platforms. The fleet includes Caterpillar and Komatsu backhoes and excavators, bulldozers and wheel loaders, and a transport fleet spanning 4t and 10t dump trucks through to large mining-class vehicles (773G, AH400, D350D, HD465, HM300) plus trailers. Specialized environmental processing assets (HG6000TX, LT105, QJ241, QJ341) are operated across licensed facilities in Miyagi, Iwate, and Fukushima prefectures. The Arahamachi Intermediate Treatment Facility in Sendai-Wakabayashi processes 160 tons per day of construction debris (concrete rubble, ceramics) into RC-40 aggregate, and a separate Mountain Sand Sales Center operates in Osato, Kurikawa County. The company holds a Miyagi Prefecture general construction business license (特-4 第11819号, valid through 2027-01-29) and industrial waste permits across Sendai City, Miyagi, Iwate, Fukushima, Fukushima City, and Yamagata.

The business model is project-based and transaction-fee driven across most streams (civil engineering, demolition, transport, waste collection/transport, machinery fabrication/maintenance), with a small subscription/recurring component in equipment rental. Go-to-market is direct relationship-based contracting through public bidding for municipal and prefectural government work and direct negotiation with private construction firms. Customer segments are two co-primary verticals — government and municipal public works bodies and private construction companies — supplemented by industrial waste generators as a secondary segment. All operations are concentrated in the Tohoku region of northern Honshu; the company makes no global footprint claim. Pricing is not publicly disclosed; salary references in recruitment materials note compensation is 'per company regulations'.

Name

大和工業株式会社

Legal name

大和工業株式会社

Website

https://yamatokogyo.jp

Company type

Private

Founded year

1970

Operating status

Operating

Short description

大和工業株式会社 (Yamatokogyo Co., Ltd.) is a privately-held, family-controlled construction and industrial services firm in Sendai, Japan, offering civil engineering, demolition, licensed industrial waste disposal, equipment rental, transport, and recycled aggregate sales to government and private clients across the Tohoku region.

Ownership category

akta.pro rank

Product category

Civil Engineering and Construction Services

NAICS

Hazardous Waste Treatment and Disposal (562211), Hazardous Waste Collection (562112), Waste Treatment and Disposal (5622)

SIC

Hazardous Waste Management (4955), Refuse Systems (4953)

akta.pro primary industry

Waste & Hazardous Materials Management (incl. HazMat) (BPAHAJAK)

akta.pro secondary industry

Hazmat Waste & Hazardous Remediation Haulage (regulated waste streams) (TLADAIAJ)

Keywords

• Civil engineering services
• Demolition contracting
• Industrial waste disposal
• Heavy equipment rental
• Construction material sales

Headquarters

HQ city

Sendai

HQ country

Japan

HQ region

Asia

Offices3 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Supply Chain, Infrastructure, Others

Revenue model

1. 土木工事一式: Civil engineering works including earthworks, site preparation, and infrastructure construction services. Revenue is generated through project-based contracts for municipal, commercial, and industrial construction projects.
2. 解体工事業: Building and structure demolition services. Revenue derived from demolition project contracts for residential, commercial, and industrial properties.
3. 環境コンサル業・産業廃棄物処分業: Environmental consulting and industrial waste disposal services, including low-level radioactive waste consulting. Operates licensed disposal facilities in multiple prefectures.
4. 運輸事業: General cargo transport services using proprietary fleet of dump trucks and trailers for materials logistics.
5. レンタル事業: Rental of construction equipment and heavy machinery to external contractors.
6. 山砂・RC販売業: Sales of mountain sand and recycled concrete products (RC-40) processed at the company's Arahamachi intermediate treatment facility with 160t/day processing capacity.
7. 建設機械製作加工・車両整備業: Custom fabrication and machining of construction machinery, vehicle maintenance services, and construction equipment buying and selling.

Distribution channels1 record

Marketing channels3 records

Core offering

Yamatokogyo provides integrated civil engineering, building construction, demolition, and large-scale heavy-machinery civil works, supported by licensed industrial waste disposal, collection and transport services and environmental/low-level radioactive waste consulting. The company also operates equipment rental, general freight transport, marine vessel, and mountain sand and recycled RC-40 aggregate sales, executed with a fleet of Caterpillar/Komatsu backhoes, bulldozers, loaders, dump trucks and specialized waste-processing machinery.

Product overview

大和工業株式会社 operates as a diversified construction and industrial services company offering integrated civil engineering, building construction, demolition, and heavy machinery services. The company operates licensed waste disposal facilities and provides equipment rental services. Their core offerings span civil engineering (土木工事一式), building construction (建築工事一式), demolition (解体工事業), environmental consulting, industrial waste disposal, machinery rental, and material sales (山砂RC販売業). The company maintains a fleet of heavy equipment including backhoes (バックホウ), bulldozers/loaders (ブルドーザー・ローダー), and transport vehicles (運搬車両) for project execution. The company also operates waste processing facilities including the 荒浜中間処理場 with 160t/day capacity for recycling construction debris into RC-40 aggregate materials.

Differentiator

Problem solved

Functional benefit

Products and services

• Marine/Vessel Business (船舶事業) Maritime vessel operations and related services supporting the company's construction and material-handling activities.
• Civil Engineering Services (土木工事一式) Comprehensive civil engineering construction services covering earthworks, foundation work, site preparation and infrastructure development for government and private construction clients in the Tohoku region.
• Large Heavy Machinery Civil Engineering (大型重機土木工事一式) Large-scale civil engineering projects executed with heavy construction equipment, including earthmoving and site preparation operations using Caterpillar and Komatsu machinery.
• Building Construction Services (建築工事一式) Full-service building construction including new construction and renovation projects for commercial and industrial clients.
• Demolition Services (解体工事業) Complete building and structure demolition services for residential, commercial and industrial properties, including proper waste handling and disposal coordination.
• Renovation Services (リニューアル工事) Building and infrastructure renovation and modernization services.
• Environmental Consulting (環境コンサル業) Environmental consulting services supporting construction and development projects, including soil and site environmental remediation advisory.
• Low-Level Radioactive Waste Consulting (低レベル放射性廃棄物コンサル業) Specialized consulting for low-level radioactive waste management, leveraging the company's licensed waste handling credentials.
• Industrial Waste Disposal (産業廃棄物処分業) Licensed industrial waste disposal services operated under permits in Sendai City, Miyagi, Iwate, Fukushima prefectures and Fukushima City, executed at the company's processing facilities.
• Industrial Waste Collection and Transport (産業廃棄物収集運搬業) Licensed collection and transportation of industrial waste across Miyagi, Fukushima and Yamagata prefectures using the company's transport fleet.
• Machinery Manufacturing and Processing (諸機械製作加工) Custom machinery manufacturing and processing services supporting the company's construction and waste-handling operations.
• Vehicle and Construction Equipment Maintenance (車両整備業・建設機械整備・設備業) Maintenance services for vehicles, construction machinery and equipment, supporting both the company's internal fleet and external customers.
• Construction Machinery Buying and Selling (建設機械買い取り業) Buying and selling of construction machinery and heavy equipment, operated under the company's secondhand goods dealer permit (第221030002730号).
• General Freight Transport (一般貨物運送事業) General cargo freight transportation services using the company's fleet of 4t and 10t dump trucks and trailers for material logistics.
• Equipment Rental Services (レンタル事業) Rental of construction equipment and heavy machinery to external contractors.
• Mountain Sand and RC Sales (山砂RC販売業) Sales of mountain sand and RC-40 recycled concrete aggregate produced at the company's Arahamachi Intermediate Treatment Facility (160 t/day capacity), sold through the Mountain Sand Sales Center in Osato Town, Ōsato District.

Segments3 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Scale indicators3 records

Recent moves6 records

Expansion highlights4 records

Broad incumbents

• ダイセキ (Daiseki Co., Ltd.): Japan's leading hazardous and industrial waste treatment company with nationwide plant network. While Yamatokogyo operates regionally in Tohoku, Daiseki is the scale incumbent whose multi-prefectural permitted operations cover the same industrial waste streams the company pursues.
• 大栄環境 (Daiei Kankyo Co., Ltd.): Major Japanese waste management and recycling group with industrial waste collection, transport, and processing capabilities. Comparable service portfolio to Yamatokogyo's waste management division but at substantially larger scale.
• 鹿島道路 (Kajima Road Co., Ltd.): Subsidiary of Kajima Corporation specializing in civil engineering, paving, and earthworks. Comparable in the large-scale civil engineering (土木工事) and heavy machinery deployment scope that Yamatokogyo handles, though at a much larger scale.
• 奥村組 (Okumura Corporation): Mid-to-large Japanese general construction and civil engineering contractor with similar business mix of public works, demolition, and environmental construction. Comparable in service breadth though operating at materially larger contract scale.
• 飛島建設 (Tobishima Corporation): Japanese general construction company with established civil engineering, environmental remediation, and demolition capabilities. Comparable integrated service offering to Yamatokogyo, though at substantially larger scale.
• 錢高組 (Zenitaka Corporation): Mid-sized Japanese construction general contractor with civil engineering, building construction, and environmental engineering operations. Comparable in scope of services and focus on public-sector customers.
• 日本国土開発 (Japan Land Development Co., Ltd.): Civil engineering and construction contractor with particular strength in large-scale earthworks and environmental remediation. Directly comparable in heavy machinery civil engineering capabilities that Yamatokogyo deploys.

Direct peers

• 明星工業 (Meisei Industrial Co., Ltd.): Specialist in demolition and industrial plant dismantling with environmental remediation expertise. Direct competitor in the demolition-plus-waste vertical integrated model that Yamatokogyo operates in Tohoku.
• J&T環境 (J&T Environment Corporation): Industrial waste management and environmental services company, with operations and licensing footprint comparable to Yamatokogyo's hazardous waste collection and disposal capabilities in the Tohoku and eastern Japan regions.
• ジオスター (Geostar Corporation): Construction materials manufacturer producing concrete and recycled aggregate products. Comparable to Yamatokogyo's 山砂RC販売業 (mountain sand and recycled concrete aggregate) business and the Arahamachi Intermediate Treatment Facility's RC-40 output.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat3 records

Key risks6 records

Key highlights6 records

Customer concentration

Compliance9 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 records

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 大和工業株式会社