# 25 leading Civil Engineering companies in Australia

Tamtam tracks 25 Civil Engineering companies headquartered in Australia. This list ranks all of them by number of employees on LinkedIn, led by GHD, Service Stream and WBHO Infrastructure. Their median headcount is 237. Half of them were founded in 1989 or later. The most common headquarters are Macquarie Park (2) and Perth (2).

These civil engineering companies in Australia are primarily large and mid-sized firms, many with a long operational history. They offer a range of services from comprehensive infrastructure development to specialized geotechnical and environmental consulting.

Key players include GHD, a global network providing integrated solutions in water, energy, and communities; Service Stream, which offers end-to-end asset life-cycle services in telecommunications, utilities, and transport; WBHO Infrastructure, an international specialist in engineering-led asset maintenance and infrastructure solutions; and Seymour Whyte, a civil contractor delivering major infrastructure projects. A notable pattern is the concentration of headquarters in Sydney and its surrounding areas, indicating a regional hub for the civil engineering sector.

🇦🇺 Australia · 25 companies · Updated Nov 13, 2026

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [GHD](https://www.tamtam.ai/c/ghd) (ghd.com)<br>A global network of professionals providing integrated solutions in water, energy, and communities through engineering, environmental, design, and construction expertise | Civil Engineering | 🇦🇺 Sydney | 17,363 | 1928 |
| 2 | [Service Stream](https://www.tamtam.ai/c/service-stream) (servicestream.com.au)<br>Service Stream provides end-to-end asset life-cycle services in telecommunications, utilities, and transport sectors, with a team of 5000+ employees and skilled contractors | Civil Engineering | 🇦🇺 Docklands | 2,403 |  |
| 3 | [WBHO Infrastructure](https://www.tamtam.ai/c/wbho-infrastructure) (wbho.com.au)<br>An international specialist group focused on engineering-led asset maintenance, mining services, and infrastructure solutions | Civil Engineering | 🇦🇺 Subiaco | 1,126 |  |
| 4 | [Seymour Whyte](https://www.tamtam.ai/c/seymour-whyte) (seymourwhyte.com.au)<br>A multi award-winning civil contractor delivering major infrastructure projects across Australia, known for exceptional service, skilled employees, and innovative solutions | Civil Engineering | 🇦🇺 Australia | 928 | 1987 |
| 5 | [Abergeldie Complex Infrastructure](https://www.tamtam.ai/c/abergeldie-complex-infrastructure) (abergeldie.com)<br>A contractor with 25 years experience in Australia and New Zealand, specializing in water, bridges, transport, energy, and remediation projects for better communities | Civil Engineering | 🇦🇺 Regents Park | 582 | 1994 |
| 6 | [PSM](https://www.tamtam.ai/c/psm) (psm.com.au)<br>Specializing in engineering services for rock, soil, and water, the company brings together experienced professionals in geology, mining, and hydrology | Civil Engineering | 🇦🇺 North Ryde | 539 | 1993 |
| 7 | [Douglas Partners](https://www.tamtam.ai/c/douglas-partners) (douglaspartners.com.au)<br>Engineering consultancy specialising in geotechnics, rock mechanics, environment, groundwater, earthworks, and geophysics with extensive experience and quality assurance. | Civil Engineering | 🇦🇺 West Ryde | 483 | 1963 |
| 8 | [CIMIC Group](https://www.tamtam.ai/c/cimic-group) (cimic.com.au)<br>Engineering-led construction, mining, services, and infrastructure development across asset lifecycles, supported by specialized subsidiaries and a strong safety focus. | Civil Engineering | 🇦🇺 North Sydney | 432 |  |
| 9 | [Sinclair Knight Merz](https://www.tamtam.ai/c/sinclair-knight-merz) (jacobs.com)<br>A globally-recognized projects firm specialized in strategic consulting, engineering, and project delivery was acquired by Jacobs in 2013 | Civil Engineering | 🇦🇺 St Leonards | 422 |  |
| 10 | [Daracon Group](https://www.tamtam.ai/c/daracon-group) (daracon.com.au)<br>Specializing in construction services, our company has a strong reputation for quality work in road, rail, concrete structures, landscaping, quarrying, plant hire, and mining | Civil Engineering | 🇦🇺 Beresfield | 363 | 1983 |
| 11 | [CMW Geosciences](https://www.tamtam.ai/c/cmw-geosciences) (cmwgeosciences.com)<br>Specialist geotechnical consultancy delivering top-notch engineering services in Australia and New Zealand across Infrastructure, Energy & Resources, and Land & Buildings sectors | Civil Engineering | 🇦🇺 Perth | 324 | 2012 |
| 12 | [pitt&sherry](https://www.tamtam.ai/c/pitt-and-sherry) (pittsh.com.au)<br>Engineering and environmental consultancy providing project lifecycle services including planning, design, asset management, and decommissioning for various industry sectors. | Civil Engineering | 🇦🇺 Melbourne | 323 | 1963 |
| 13 | [Freyssinet Australia](https://www.tamtam.ai/c/freyssinet-australia) (freyssinet.com.au)<br>A multifaceted contractor specializing in civil engineering, building post-tensioning, and structure remediation, providing innovative solutions for various construction projects worldwide | Civil Engineering | 🇦🇺 Macquarie Park | 237 | 1976 |
| 14 | [CMC](https://www.tamtam.ai/c/cmc-eagle-farm) (cmc.net.au)<br>A privately owned contractor in civil infrastructure and mining, specializing in self-performed projects with a focus on safety, quality, and client collaboration | Civil Engineering | 🇦🇺 Eagle Farm | 236 | 2002 |
| 15 | [Civilmart Rocla](https://www.tamtam.ai/c/civilmart-rocla) (rocla.com.au)<br>Leading supplier of pipe, precast, and water quality products for infrastructure projects, focusing on strong relationships, development opportunities, and career support for employees | Civil Engineering | 🇦🇺 Guildford | 170 |  |
| 16 | [FSC](https://www.tamtam.ai/c/fsc-richmond) (fscgroup.com.au)<br>Employee-owned company specializing in engineering, project management, and environmental consulting for transport infrastructure planning, design, delivery, and asset management. | Civil Engineering | 🇦🇺 Richmond | 169 | 2015 |
| 17 | [Avopiling Foundation Specialists](https://www.tamtam.ai/c/avopiling-foundation-specialists) (avopiling.com.au)<br>A leading Australian Ground Engineering and Foundation Services company offering innovative and economical solutions for piling, drilling, and ground improvement works nationwide | Civil Engineering | 🇦🇺 Chatswood | 164 | 1989 |
| 18 | [Water Resources](https://www.tamtam.ai/c/water-resources) (waterresources.com.au)<br>Specialist consultancy offering strategy, planning, advisory services, and engineering solutions within the water resources sector | Civil Engineering | 🇦🇺 Kenmore | 160 | 2016 |
| 19 | [Bielby Holdings](https://www.tamtam.ai/c/bielby-holdings) (bielby.com.au)<br>Queensland-based civil engineering provider with 37 years of success, offering earthworks and infrastructure services across Australia with a focus on collaboration and client value | Civil Engineering | 🇦🇺 Milton | 159 |  |
| 20 | [Atlan Stormwater](https://www.tamtam.ai/c/atlan-stormwater) (atlanstormwater.com)<br>A global leader with over 45 years of experience in designing, manufacturing, and testing water treatment solutions for various industries worldwide | Civil Engineering | 🇦🇺 Silverwater | 149 | 1972 |
| 21 | [TCD Group](https://www.tamtam.ai/c/tcd-group) (tcdgroup.com.au)<br>A Multi-Disciplinary Contractor offering a 'One Stop Service' for Earthworks, Roadworks, Concrete Construction, and more in Western Australia | Civil Engineering | 🇦🇺 Perth | 147 | 1985 |
| 22 | [Rob Carr Pty Ltd](https://www.tamtam.ai/c/rob-carr-pty-ltd) (robcarr.com.au)<br>Specialist in microtunnelling, deep shaft construction, and complex underground service installations for water, energy, and power sectors globally. | Civil Engineering | 🇦🇺 Yatala | 112 | 1989 |
| 23 | [CATCON](https://www.tamtam.ai/c/catcon) (catcon.com.au)<br>CATCON is a leading civil engineering construction company in Australia, specializing in power, mining, water, and general infrastructure projects with national and international clients | Civil Engineering | 🇦🇺 Angle Park | 93 |  |
| 24 | [Menard Oceania](https://www.tamtam.ai/c/menard-oceania) (menardoceania.com.au)<br>A design and construct specialist geotechnical contractor offering ground improvement solutions for construction projects on challenging sites | Civil Engineering | 🇦🇺 Macquarie Park | 79 | 2004 |
| 25 | [GM Piling](https://www.tamtam.ai/c/gm-piling) (gmpiling.co.uk)<br>Innovative piling contractor in the UK with over 30 years of experience offering a range of piling techniques, foundation solutions, and ground remediation services | Civil Engineering | 🇦🇺 Attleborough | 27 | 2011 |

## How this list is built

Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Nov 13, 2026.

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Source: https://www.tamtam.ai/l/civil-engineering-companies-australia