JK Geotechnics
JK Geotechnics is an Australian geotechnical engineering consultancy (founded 1976, 51-100 staff) that delivers site investigation, numerical analysis, forensic/expert witness, and construction support services to government, infrastructure, and private developer clients across NSW and Queensland as part of JK Group.
- Company typePrivate
- Founded1976
- HeadquartersSydney, Australia
- Headcount51–100
- GTM typeB2B
- OfferingServices
What JK Geotechnics does
JK Geotechnics is an Australian civil engineering consulting firm specializing in geotechnical engineering and engineering geology, operating as a division of JK Group alongside sister companies JK Environments (environmental consulting) and JK Drilling (drilling services). Founded in 1976 and headquartered in Macquarie Park, Sydney, the firm employs 51-100 staff across four offices in New South Wales (Sydney, Central Coast) and Queensland (Brisbane, Sunshine Coast). The company delivers eight core service lines — site investigation, 2D/3D numerical analysis, forensic investigation and expert witness services, hydrogeology, landslide hazard risk assessment, lot/site classification per AS2870, construction support, and retention systems analysis — to nine customer verticals including residential, transport, commercial/industrial, education, health and aged care, legal and insurance, government, landfill/waste, and water/dams/levees.
The firm's analytical capability is built on specialized engineering software (PLAXIS 2D/3D, Seep 3D, Wallap, Slope/W, Leapfrog) for soil-structure interaction modeling, groundwater seepage analysis, and 3D ground characterization, supported by a proprietary subsurface conditions database spanning the Sydney metropolitan area, regional NSW, and Queensland accumulated across 36,000+ projects. The company holds ISO 9001, ISO 14001, and ISO 27001 certifications and is a member of ACLCA, the Australian Geomechanics Society, and Consult Australia.
Revenue is generated on a fee-for-service professional consulting model, with projects acquired through direct outreach, tender processes, and referrals from engineers, architects, and contractors. Pricing is project-specific via quotations; no public pricing, subscription, or recurring revenue model exists. Customer engagement is predominantly B2B, spanning government agencies (Roads and Maritime Services, Transport for NSW, Health Infrastructure NSW, multiple NSW councils), large infrastructure joint ventures (Impregilo Salini Joint Venture for Sydney Metro Northwest), universities (University of Technology Sydney), and private developers (Coronation Property, Helm, Lindsay Bennelong). Notable project work has included deep excavations up to 30m, reinforced earth retaining walls up to 16m in height and 160m in length, cliff face stability assessments to 75m height, and forensic investigations for NSW court proceedings.
JK Geotechnics firmographics
Firmographics- Name
- JK Geotechnics
- Legal name
- JK Geotechnics
- Website
- https://jkgeotechnics.com.au
- Company type
- Private
- Founded year
- 1976
- Operating status
- Operating
- Headcount range
- 51–100 employees
- Short description
- JK Geotechnics is an Australian geotechnical engineering consultancy (founded 1976, 51-100 staff) that delivers site investigation, numerical analysis, forensic/expert witness, and construction support services to government, infrastructure, and private developer clients across NSW and Queensland as part of JK Group.
- Ownership category
- akta.pro rank
JK Geotechnics industry classification
Industry- Product category
- Geotechnical Engineering Services
- NAICS
- Architectural, Engineering, and Related Services (5413)
- SIC
- Services-Commercial Physical & Biological Research (8731)
- akta.pro primary industry
- Geotechnical & Subsurface Engineering Consulting (BPAHAIAB)
- akta.pro secondary industries
- Geotechnical Investigation & Site Characterization (Boreholes, In-situ Testing, Lab Testing) (IMAFAOAG), Geotechnical Site Investigation & Engineering Geology (Borings, Lab Testing) (EUAHAFAE)
Keywords
Where JK Geotechnics is headquartered
LocationHeadquarters
- HQ city
- Sydney
- HQ country
- Australia
- HQ region
- Oceania
Offices4 records
Markets served
JK Geotechnics business model
Business model- GTM type
- B2B
- Offering type
- Services
- Cost components
- Personnel, Operations, Technology or R&D, Marketing or Sales
Revenue model
- Geotechnical Engineering Consulting Services: Fee-for-service professional consulting engagements covering site investigation, analysis, forensic investigation, expert witness, hydrogeology, landslide hazard assessment, lot/site classification, construction support, and retention systems analysis. Revenue is generated on a project-by-project basis through quotations and tenders.
Go-to-market motion1 record
Distribution channels3 records
Marketing channels4 records
JK Geotechnics product offering
Product offeringCore offering
JK Geotechnics is a geotechnical engineering and engineering geological consultancy that delivers site investigation, numerical analysis, forensic investigation and expert witness, hydrogeology, landslide hazard risk assessment, lot/site classification, construction support, and retention systems analysis. Services are sold on a project-by-project basis via quotations and tenders to government agencies, developers, engineering firms, and institutional clients. The company operates as a division of JK Group alongside sister companies JK Environments and JK Drilling to deliver integrated subsurface assessments.
Product overview
JK Geotechnics is a geotechnical engineering consultancy offering a comprehensive suite of eight integrated service offerings centered on geotechnical investigation, analysis, and engineering solutions. The core service portfolio includes Site Investigation (drilling, testing, monitoring system design), Analysis (2D/3D numerical modeling), Forensic & Expert Witness services, Hydrogeology, Landslide Hazard Risk Assessment, Lot/Site Classification, Construction Support, and Retention Systems Analysis. These services operate across multiple sectors including Residential, Transport, Commercial/Industrial, Education, Health & Aged Care, Legal & Insurance, Government, Landfill/Waste/Wastewater, and Water/Dams/Levees. The company utilizes specialized software including Wallap, Slope/W, Plaxis 2D, Plaxis 3D, and Seep 3D to deliver advanced analytical capabilities.
Differentiator
Problem solved
Functional benefit
Products and services
- Site Investigation
Companies that use JK Geotechnics
Customer profileNamed customers14 records
Segments9 records
Ideal customer profiles3 records
JK Geotechnics technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature6 records
JK Geotechnics partnerships and signals
Strategic signalPartnerships
Eleven partnerships are on record, tiered core and minor.
- JK EnvironmentscoreJK Environments (JKE) is the environmental consulting division within JK Group. JK Geotechnics and JK Environments frequently collaborate on projects where both geotechnical and environmental assessments are required, such as contaminated land investigations, groundwater monitoring, and integrated site assessments for major developments.
- JK DrillingcoreJK Drilling is the drilling services division within JK Group. JK Geotechnics works closely with JK Drilling to deliver integrated site investigation services, with JK Drilling providing the drilling, testing, and sampling resources that complement JK Geotechnics' engineering and geological expertise.
- ACLCA (Australasian Land and Groundwater Association)minorJK Geotechnics and JK Environments maintain membership in ACLCA (Contaminated Land), a professional association for practitioners in contaminated land assessment and remediation in Australia.
- Australian Geomechanics Society (AGS)minorJK Geotechnics holds membership in the Australian Geomechanics Society, a national technical society for geotechnical engineers and engineering geologists.
- Consult AustraliaminorJK Geotechnics holds membership in Consult Australia, the peak industry body for consulting companies in the built environment sector.
- Van Der Meer ConsultingminorJK Geotechnics worked with Van Der Meer Consulting (structural engineers) to assess and design the Manly Civic Club residential development, providing structural forces data for raft slab design and collaborating on shoring wall design to limit movements within acceptable limits.
- MN Builders / Coronation PropertyminorJK Geotechnics provided geotechnical investigation and 3D numerical analysis services for a 30m deep excavation project led by Coronation Property with builder MN Builders in Parramatta, NSW.
- Inner Western Sydney site developerminorJK Geotechnics and JK Environments completed geotechnical and environmental investigations for a redevelopment project involving construction over the edge of a backfilled quarry in inner western Sydney.
- Royal HaskoningDHVminorJK Geotechnics collaborated with coastal engineers Royal HaskoningDHV on the Palmers Island Caravan Park alterations and additions project, completing riverbank stability analyses and developing a risk management plan in conjunction with Royal HaskoningDHV's coastal engineering work.
- Impregilo Salini Joint VentureminorJK Geotechnics completed geotechnical investigation, monitoring, and construction support for the Sydney Metro Northwest surface viaduct civil works for the Impregilo Salini Joint Venture.
- Mott MacDonald / Transport for NSWminorJK Geotechnics provided geotechnical site investigation services for the Epping Bridge Project under engagement by Mott MacDonald for Transport for NSW.
Scale indicators6 records
Recent moves5 records
Expansion highlights4 records
JK Geotechnics competitors and assessment
Company assessmentDirect peers
- Douglas Partners: Australian specialist geotechnical, geo-environmental and groundwater consultancy with offices across NSW, QLD, VIC, WA and SA. Most directly comparable to JK Geotechnics — same core service lines (site investigation, slope stability, forensics, expert witness) and similar reliance on advanced numerical analysis software.
- Coffey International (Tetra Tech): Specialist Australian-founded geotechnical and environmental consultancy now part of Tetra Tech. Direct competitor in site investigation, contaminated land, and slope stability across NSW and QLD with broadly similar service mix and project scale.
Broad incumbents
- GHD: Large Australian-headquartered global engineering, environmental and construction services firm with dedicated geotechnical capability. Overlaps with JKG on transport, water, and government infrastructure work, but operates as a broad multidisciplinary incumbent rather than a dedicated geotechnical specialist.
- Aurecon: Global engineering and infrastructure advisory headquartered in Australia, providing geotechnical and tunnelling services alongside broader civil, structural and advisory practices. Competes with JKG for complex transport and government tenders but offers a far wider service portfolio.
- WSP Australia: Global professional services consultancy with a substantial Australian earth and environment practice covering geotechnical, geological and tunneling services. Competes with JKG on Sydney/SEQ infrastructure and property projects at the multidisciplinary end of the market.
- AECOM Australia: Global infrastructure consulting firm with a strong Australian geotechnical and tunneling practice serving transport, water and government clients. Overlaps with JKG on Sydney Metro-class projects and major public sector tenders.
- SMEC (Snowy Mountains Engineering Corp): Australian-origin global engineering consultancy with geotechnical capability supporting transport, water, and energy infrastructure. Competes with JKG on NSW and QLD government infrastructure mandates.
- Stantec Australia: Global design and engineering consultancy, successor to Cardno's Australian geotechnical and environmental practice. Provides geotechnical services to water, transport, and built environment clients overlapping with JKG's NSW and QLD markets.
Emerging players
- Mott MacDonald: Global engineering consultancy that has engaged JKG on Transport for NSW bridge projects and competes for similar large infrastructure programs. Overlap is strongest on transport infrastructure and bridges rather than JKG's residential and SME commercial work.
- Royal HaskoningDHV: Dutch-headquartered engineering consultancy that has collaborated with JKG on coastal engineering and riverbank stability in NSW. Comparable in the niche coastal/riverbank stability niche rather than across the full JKG service portfolio.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat4 records
Key risks6 records
Key highlights7 records
Customer concentration
JK Geotechnics social profiles
Digital presenceJK Geotechnics compliance and trust
Trust signalCompliance3 records
JK Geotechnics financial estimates
Financial estimateRevenue estimate
Valuation estimate
JK Geotechnics leadership team
Management profileNumber of profiles
JK Geotechnics funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
JK Geotechnics M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about JK Geotechnics
What does JK Geotechnics do?
JK Geotechnics is a geotechnical engineering and engineering geological consultancy that delivers site investigation, numerical analysis, forensic investigation and expert witness, hydrogeology, landslide hazard risk assessment, lot/site classification, construction support, and retention systems analysis. Services are sold on a project-by-project basis via quotations and tenders to government agencies, developers, engineering firms, and institutional clients. The company operates as a division of JK Group alongside sister companies JK Environments and JK Drilling to deliver integrated subsurface assessments.
Is JK Geotechnics a public or private company?
JK Geotechnics is a private company. It is classified as corporate owned and is currently operating.
When was JK Geotechnics founded?
JK Geotechnics was founded in 1976. It employs 51 to 100 people.
Where is JK Geotechnics based?
JK Geotechnics is headquartered in Sydney, Australia, in the Oceania region.
How does JK Geotechnics make money?
One revenue line is on record: geotechnical Engineering Consulting Services.
Who are JK Geotechnics's main competitors?
Direct peers on record are Douglas Partners and Coffey International (Tetra Tech). Broad incumbents are GHD, Aurecon, WSP Australia, AECOM Australia, SMEC (Snowy Mountains Engineering Corp) and Stantec Australia. Emerging players are Mott MacDonald and Royal HaskoningDHV.
Does JK Geotechnics have an API?
No public API is recorded for JK Geotechnics.
What industry is JK Geotechnics in?
JK Geotechnics's product category is Geotechnical Engineering Services. Its primary akta.pro industry code is BPAHAIAB, Geotechnical & Subsurface Engineering Consulting, with a secondary code of IMAFAOAG, Geotechnical Investigation & Site Characterization (Boreholes, In-situ Testing, Lab Testing). Its NAICS code is 5413 and its SIC code is 8731.