Suncoh Consultants

What Suncoh Consultants does

Suncoh Consultants is a comprehensive construction consulting firm headquartered in Koto Ward, Tokyo, operating as a private subsidiary of NTC Holdings since its 1961 founding. The firm employs approximately 380 people across eight branch offices nationwide (Tokyo, Sapporo, Sendai, Omiya, Niigata, Nagoya, Osaka, Fukuoka) and delivers engineering consulting across five integrated service lines: survey and disaster prevention, roads and structures, rivers and water supply/sewerage, town planning and greenery, and environmental consulting. The technical stack rests on nine registered patents covering seismic exploration methods, water sampling devices, borehole vibration sources, levee diagnosis using seismometers, and tunnel lining repair, supplemented by advanced field instrumentation including DJI Matrice 300RTK drones with thermal infrared cameras, underwater drones, fiber-optic distributed sensing systems, and VR/AR/MR tools for BIM/CIM design verification. Specialized proprietary analytical methods such as NMM-DDA coupled analysis support rock slope and seismic modeling work.

Name

Suncoh Consultants

Legal name

サンuco Consultants株式会社

Website

https://suncoh.co.jp

Company type

Private

Founded year

1961

Operating status

Operating

Headcount range

251–500 employees

Short description

Suncoh Consultants is a Tokyo-headquartered comprehensive construction consulting firm, established 1961 and subsidiary of NTC Holdings, providing geological surveys, infrastructure design, and environmental consulting services to Japanese government agencies and municipalities across eight branch offices.

Ownership category

akta.pro rank

Product category

Construction Consulting Services

NAICS

Geophysical Surveying and Mapping Services (54136), Environmental Consulting Services (54162), Architectural, Engineering, and Related Services (5413)

SIC

Services-Commercial Physical & Biological Research (8731), Services-Management Consulting Services (8742)

akta.pro primary industry

Geotechnical & Subsurface Engineering Consulting (BPAHAIAB)

akta.pro secondary industries

Civil & Structural Engineering Consulting (BPAHAIAA), Construction Program Management (Multi-site/Portfolio) (IMAFAAAF)

Keywords

• Construction consulting
• Geotechnical engineering
• Infrastructure design
• Civil engineering
• Environmental assessment

Headquarters

HQ city

Koto

HQ country

Japan

HQ region

Asia

Offices8 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Government Consulting Contracts: Suncoh Consultants generates revenue through consulting service contracts with national government ministries (MLIT), prefectural governments, municipal offices, and government-affiliated organizations. Services include survey, planning, design, and maintenance management for civil engineering and infrastructure projects.

Pricing tiers

Go-to-market motion1 record

Distribution channels1 record

Marketing channels4 records

Core offering

Suncoh Consultants is a comprehensive construction consulting firm providing integrated services across geological surveying and disaster prevention, road/bridge/tunnel design, river and water supply/sewerage engineering, town planning and greenery, and environmental assessment. Services span the full civil infrastructure lifecycle from upstream planning and investigation through design to maintenance management, delivered primarily to Japanese national, prefectural, and municipal government agencies.

Product overview

Suncoh Consultants is a comprehensive construction consulting firm providing integrated consulting services across five core business domains: (1) Survey and Disaster Prevention, (2) Roads, (3) Rivers and Water Supply, (4) Town Planning and Greenery, and (5) Environment. The company operates as a multi-service consulting platform offering geological investigation, infrastructure design, urban planning, and environmental assessment services. Supporting these core services, the company has developed proprietary technology offerings including drone-based inspection systems (thermal infrared and underwater drones), VR/AR/MR visualization technologies for BIM/CIM applications, robot suits for field work efficiency, and various patented survey technologies. The service portfolio ranges from traditional consulting (planning, investigation, design, and maintenance management) to advanced technology solutions, all delivered through the company's network of domestic branches including Tokyo, Sapporo, Sendai, Omiya, Nagoya, Osaka, and Fukuoka.

Differentiator

Problem solved

Functional benefit

Products and services

• Survey and Disaster Prevention Services (調査・防災) Geological and geotechnical consulting services including subsurface investigation, groundwater analysis, seismic surveys, and disaster prevention consulting for civil engineering, disaster prevention, and resource development sectors. Targeted at government agencies and infrastructure owners needing subsurface and seismic expertise.
• Road Services (道路) Comprehensive road, bridge, tunnel, and facility design services including maintenance management consulting, supporting social infrastructure development for government clients.
• River and Water Supply Services (河川・上下水道) Investigation, planning, and design services for rivers, sand control, water supply, and sewer systems to create disaster-resistant national land and maintain favorable environmental conditions. Targeted at national, prefectural, and municipal government clients.
• Town Planning and Greenery Services (まちづくり・みどり) Urban planning, regional activation, park and green space planning, and facility planning services focused on creating vibrant communities and harmony between people and nature. Serves municipal governments and urban development authorities.
• Environment Services (環境) Scientific investigation and analysis of environmental challenges, assessment and countermeasure studies, and planning for better future environmental solutions by an expert environmental team. Serves government agencies and public-sector clients requiring environmental consulting.

Quantifiable outcome

• Received Chubu DX Award 2025 from MLIT Chubu Regional Development Bureau
• +2 more outcomes

Named customers13 records

Segments3 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature11 records

Partnerships

Three partnerships are on record, tiered core and minor.

• NTC Holdings Co., Ltd. (NTCホールディングス)coreStrategic or Co-development PartnerSuncoh Consultants is a subsidiary of NTC Holdings. Through this affiliation, the company collaborates on overseas development consulting projects, participates in infrastructure reconstruction and development, poverty elimination, and education improvement initiatives in developing countries. The relationship enables Suncoh to participate in earth-scale consulting through NTC Holdings' overseas business network.
• NTC International Co., Ltd. (NTCインターナショナル)coreStrategic or Co-development PartnerNTC International handles overseas business operations for the NTC Holdings group. Suncoh collaborates with NTC International through personnel exchanges, training programs, and talent development to actively support overseas assistance initiatives.
• Cabinet Office (内阁府)minorStrategic or Co-development PartnerSuncoh's SDG initiatives are registered as a member of the Cabinet Office's Local Creation SDGs Public-Private Partnership Platform, supporting sustainable development goals through civil engineering technology.

Scale indicators2 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• Pacific Consultants Co., Ltd. Major Japanese comprehensive construction consulting firm offering geological survey, civil/infrastructure design, environmental, and town-planning services to government clients — directly overlapping Suncoh's full service portfolio.
• Asia Air Survey Co., Ltd. Japanese aerial-survey and geospatial-analytics firm focused on disaster prevention, infrastructure inspection, and environmental measurement — comparable to Suncoh's airborne/UAV-based survey capabilities.
• Nippon Koei Co., Ltd. Listed Japanese engineering consultancy with deep expertise in water resources, dams, transportation, and disaster prevention — closely overlapping Suncoh's river, water-supply/sewerage, and disaster-prevention service lines.
• CTI Engineering Co., Ltd. Japanese construction consulting firm covering roads, tunnels, water, environment, and urban planning — direct competitor to Suncoh across multiple MLIT regional-bureau engagements.
• IDEA Consultants, Inc. Japanese consulting firm offering environmental assessment, water-resources planning, and disaster-prevention engineering — comparable to Suncoh's environment and river/water service domains.
• Oriental Consultants Co., Ltd. Japanese engineering consulting firm active in roads, tunnels, urban planning, and environment — directly comparable government-client base and service lines to Suncoh.
• Kokusai Kogyo Co., Ltd. Japanese surveying and geospatial consulting firm with strong capabilities in geological survey, geophysical measurement, and disaster-related analysis — directly overlapping Suncoh's core survey/disaster-prevention offerings.
• Yachiyo Engineering Co., Ltd. Comprehensive Japanese engineering consultancy with similar civil infrastructure, water, environmental, and disaster-resilience service mix to Suncoh.
• Chodai Co., Ltd. Mid-sized Japanese engineering consultancy specializing in bridges, roads, tunnels, and infrastructure maintenance — overlapping with Suncoh's road and maintenance-management services.

Others

• NTC International Co., Ltd. Group company under the same NTC Holdings parent that handles overseas development consulting — adjacent rather than competitive, but tightly coupled to Suncoh through the parent group.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights6 records

Customer concentration

• YouTubeyoutube.com/channel/UCZqDiClPhBHUyZcH9_zsZGw

Compliance2 records

Revenue estimate

Valuation estimate

Number of profiles

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 Suncoh Consultants