Operating for 35 Years I 150+ Years of Experience I 84,000+ Jobs Completed I Iso Accredited I In-house Engineers

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Who we are

The first-choice ground engineering and asset preservation partner

Our history

Industry Leaders Since 1989

Mainnmark has led the industry for re-levelling, ground improvement and void-filling solutions, developing and delivering the world’s most advanced and accurate solutions.

As a global ground engineering and asset preservation company, we draw on over three decades of experience and knowledge in leading, developing and delivering the most advanced and accurate ground improvement, re-levelling and void-filling solutions across residential, commercial, infrastructure and mining sectors.

With over 82,000 completed projects across Australia, New Zealand, Japan, Thailand and the United Kingdom, we have built a global reputation for delivering innovative solutions to some of the most iconic projects in the world, earning international recognition as an award-winning ground engineering organisation.

Mainmark is a privately owned company headquartered in Sydney, Australia. We have successfully grown our global presence over the last 20 years and have 18 office locations worldwide.

Leadership team

A dedicated team of professionals

Expertise and knowledge spanning decades

Our people are the key to our success.

Mainmark’s team of passionate, experienced, and knowledgeable industry experts ensures we remain Australia’s leading ground engineering and asset preservation company.

With global reach and local expertise, our team collaborates to deliver quality outcomes for our partners and clients, making us a trusted partner for Tier 1 clients and homeowners alike.

 

Join our team

The talent we hire today will build the future of Mainmark tomorrow

We are always on the lookout for new additions to the Mainmark family.

With offices across the globe, we have opportunities to work in both Sydney as well as the regions and love to see our team move around the group as they develop.

If you’re interested in a fulfilling career and joining the Mainmark team we would love to hear from you.

 

HSE&Q Management System

Effectively manage risks across all operations

Our robust Health, Safety, Environment, and Quality (HSE&Q) Management System ensures we effectively manage risks across all operations.

The Integrated system ensures that we provide high-quality products and services while prioritising Safety and environmental management. We are committed to satisfying customers, maintaining a safe work environment, minimising environmental impacts, and managing risks.

 

Award winning

Global leader in ground engineering

Mainmark is an international award-winning ground engineering organisation that has successfully delivered projects in Australia, New Zealand, Japan, Thailand and the United Kingdom.

Locations

Global reach with local expertise

Get in touch with one of our global offices

Our business proudly operates across four countries, operating seamlessly to deliver exceptional services to our clients.

With a dedicated team of 253 staff members, we have strategically established 18 office locations that serve as hubs of innovation and collaboration.

Need help?

Need help with a project? Contact us today.

Mainmark

© 2025 The Mainmark group of companies. ‘Mainmark®’, ‘Terefil®’, ‘Terefirm®’ and ‘Teretek®’ are trademarks of the Mainmark group of companies.

Mainmark Ground Engineering Pty Ltd
ABN: 51 606 182 503

ISO 9001
ISO 14001
ISO 45001

Solutions

Ground Improvement

Subsidence Repair

Re-Levelling

Void Filling

Slab Lifting

Crack Wall Repair

Sinking Floors

Sinking Foundation Repair

Underpinning Repairs

Locations

Adelaide

Brisbane

Canberra

Hobart

Melbourne

New South Wales

Perth

Queensland

South Australia

Sydney

Tasmania

Townsville

Victoria

Western Australia

Sectors

Commercial

Residential

Infrastructure

Mining

Technologies

Teretek®

Terefil®

JOG

About Us

Our team

Careers

Media & Press

News

Awards

Contact

Locations
Mainmark Sydney

169 Sailors Bay Rd, Northbridge New South Wales 2063

 

Mainmark Melbourne

Unit 8, 33 Rosalie Street, Springvale Victoria 3171

Mainmark South Australia

19 Heath St, Lonsdale SA 5160

Mainmark Queensland

20 Computer Road, Yatala QLD 4207

Mainmark Perth

115 Excellence Dr, Wangara WA 6065

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