What JK Group does

JK Group is an Australian employee-owned geotechnical engineering and environmental consulting firm headquartered in Macquarie Park, NSW, with offices in Sydney, the Central Coast, Brisbane and the Sunshine Coast. Founded in 1976 as Jeffery and Katauskas Pty Ltd, the firm operates through four interconnected divisions: JK Geotechnics (site investigation, slope stability, foundation design, landslide risk assessment, forensic and expert witness services), JK Environments (contaminated land, hazardous materials, waste, hydrogeology and climate risk consulting), JK Drilling (drilling, CPT, in-situ testing and specialised equipment hire), and Soil Test Services (a NATA-accredited soil, rock, asphalt and aggregates testing laboratory with earthworks control capability). The firm serves residential developers, commercial and industrial clients, transport authorities (notably Transport for NSW, for which it holds Technically Assured Organisation certification), local councils, state government agencies, education and health infrastructure bodies, infrastructure contractors, and the legal/insurance sector.

Name

JK Group

Legal name

JK Geotechnics Pty Ltd

Website

https://jkgroup.net.au

Company type

Private

Founded year

1976

Operating status

Operating

Headcount range

51–100 employees

Short description

JK Group is an Australian employee-owned geotechnical engineering and environmental consulting firm operating four divisions (JK Geotechnics, JK Environments, JK Drilling and a NATA-accredited lab) across NSW and Queensland, serving government, infrastructure, residential and commercial clients.

Ownership category

akta.pro rank

Product category

Geotechnical Engineering & Environmental Consulting

NAICS

Testing Laboratories and Services (54138), Architectural, Engineering, and Related Services (5413)

SIC

Services-Testing Laboratories (8734)

akta.pro primary industry

Geotechnical & Subsurface Engineering Consulting (BPAHAIAB)

akta.pro secondary industry

Geotechnical Investigation & Site Characterization (Boreholes, In-situ Testing, Lab Testing) (IMAFAOAG)

Keywords

• Geotechnical engineering services
• Environmental consulting services
• Site investigation drilling
• Contaminated land assessment
• Soil materials testing

Headquarters

HQ city

North Sydney

HQ country

Australia

HQ region

Oceania

Offices4 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Geotechnical Consulting Services: Professional consulting fees for site investigations, geotechnical analysis, slope stability assessments, foundation design, and construction support. Services provided to residential, commercial, industrial, and government clients across NSW and Queensland.
2. Environmental Consulting Services: Fees for contaminated land investigations, remediation planning, hazardous materials assessments, acid sulfate soil assessments, and environmental compliance reporting.
3. Drilling Services: Site investigation drilling, in-situ testing and sampling services for geotechnical and environmental investigations. Fleet available for both internal JK Group projects and external hire.
4. Laboratory Testing Services: NATA-accredited materials testing for soil, rock, asphalt and aggregates including triaxial, permeability, consolidation, strength and asphalt mix compliance testing. Also includes on-site testing services for pavements, fill platforms, trench backfills and dams.
5. Expert Witness and Technical Verifier Services: Forensic investigation services for insurance claims and expert witness services for complex projects and court-related matters.

Go-to-market motion1 record

Distribution channels2 records

Marketing channels5 records

Core offering

JK Group is an integrated geotechnical engineering and environmental consulting firm delivering site investigation, geotechnical analysis, foundation design, slope stability and landslide risk assessment, contaminated land and remediation services, hazardous materials surveys, drilling and in-situ testing, and NATA-accredited soil/rock/asphalt laboratory testing. Services are delivered through four divisions (JK Geotechnics, JK Environments, JK Drilling, Soil Test Services) to residential developers, commercial clients, government agencies, transport authorities and infrastructure contractors across NSW and Queensland.

Product overview

JK Group is a unified geotechnical engineering and environmental consulting organization comprising four interconnected divisions: JK Geotechnics (core geotechnical engineering), JK Environments (environmental consulting), JK Drilling (specialized drilling services), and Soil Test Services STS (NATA-accredited materials testing laboratory). These divisions work together to provide fully integrated services, with JK Drilling and STS supporting the geotechnical and environmental consulting work of JK Geotechnics and JK Environments respectively.

Differentiator

Problem solved

Functional benefit

Products and services

• JK Geotechnics Geotechnical engineering and engineering geological consultancy offering site investigation, geotechnical analysis, foundation design, slope stability, landslide risk assessment, hydrogeology, pavement design, retention system analysis, construction support and expert witness services for residential, commercial, transport, infrastructure and government clients across NSW and Queensland.
• JK Environments Environmental consultancy providing contaminated land assessment, remediation planning, waste classification, hazardous materials and asbestos surveys, hydrogeology, water resources, dryland salinity and acid sulfate soil management, and climate risk and resilience services to comply with environmental standards and regulatory requirements.
• JK Drilling Drilling division operating a comprehensive range of drilling, in-situ testing and sampling equipment for geotechnical and environmental investigations, available for both internal JK Group projects and external hire to other consulting firms and contractors.
• Soil Test Services (STS) NATA-accredited soil, rock, asphalt and aggregates materials testing laboratory providing comprehensive testing including triaxial, permeability, consolidation, strength and asphalt mix compliance testing, plus on-site earthworks testing services for pavements, fill platforms, trench backfills and dams.

Quantifiable outcome

• Completed over 36,000 site investigations across NSW and beyond
• +1 more outcomes

Named customers9 records

Segments8 records

Ideal customer profiles5 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature6 records

Partnerships

Three partnerships are on record, tiered core and minor.

• Transport for NSWcoreStrategic or Co-development PartnerJK Group obtained TfNSW TAO (Technically Assured Organisation) certification enabling provision of specialized geotechnical and environmental services to the expanding infrastructure and transport sector in NSW. The certification covers all JK Group divisions including JK Geotechnics, JK Environments, JK Drilling and Soil Test Services (STS).
• UNSWcoreStrategic or Co-development PartnerJK Geotechnics is a longstanding UNSW Industry Partner. The company presents the JK Geotechnics prize at UNSW for over 20 years in recognition of outstanding work in geotechnical engineering, and provides guest lecturing and internship opportunities.
• Australian Catholic University (ACU)minorStrategic or Co-development PartnerJK Environments senior environmental scientists deliver guest lectures to final year Environmental Science students at ACU as part of their contaminated land curriculum.

Scale indicators6 records

Recent moves15 records

Expansion highlights5 records

Broad incumbents

• GHD: Large Australian-headquartered engineering, environmental, and advisory firm with national coverage, providing geotechnical and environmental services as part of a much broader multi-disciplinary portfolio.
• WSP: Global professional services firm with a large Australian geotechnical, environmental, and transport infrastructure practice that competes with JK on NSW and QLD projects.
• Arup: Global engineering design and consulting firm with strong Australian transport, buildings, and geotechnical practices overlapping JK's sectors and clients.
• Aurecon: Global engineering and infrastructure advisory firm with significant Australian geotechnical and environmental capability, competing for the same large transport and buildings tenders as JK Group.
• AECOM: Global infrastructure consulting firm with Australian geotechnical, environmental, and transportation practices pursuing the same major public-sector projects as JK Group.

Direct peers

• Douglas Partners: Australian geotechnical, environmental, and groundwater consultancy with national coverage, drilling, and laboratory services, closely matching JK Group's integrated offering and customer base.
• Coffey (Tetra Tech): Long-standing Australian geotechnical and environmental engineering consultancy, now part of Tetra Tech, with a comparable service mix across site investigation, contamination, and infrastructure.
• CMW Geosciences: Australia and Pacific geotechnical and geosciences firm providing site investigation, geotechnical engineering, and materials testing, with similar specialty focus to JK Group.
• PSM Consultants: Australian geotechnical and environmental consulting firm offering site investigations, contamination, and pavement engineering, directly comparable in scale and service mix to JK Group.
• SLR Consulting: Global environmental and advisory consultancy with strong Australian geotechnical and contaminated-land practices, competing for similar infrastructure and resources clients.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

Compliance5 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles13 records

Subsidiaries4 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 JK Group