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    Why Mainmark ?

    Your residential subsidence specialists

    Since 1995, Mainmark has established itself as a pioneering force in the ground engineering industry, leading the way in developing and delivering cutting-edge solutions for Re-levelling, Ground Improvement and Void Filling solutions across a broad range of structures in various sectors.

    Qualified Engineering Team

    Our team comprises of qualified in-house engineers.
    At the heart of Mainmark’s success is our team of skilled professionals who plan, supervise, and execute all projects. With deep expertise in their field, Mainmark’s personnel consistently deliver exceptional results, making us a trusted partner for Tier 1 projects and homeowners alike.

    Industry leaders

    We have a proven 30 year track record.
    As the pioneering founders of the resin-injection technology in Australia, our experience, knowledge and capabilities set us apart. With an impressive track record of over 215,000 successful projects across Australia, New Zealand, Japan and the United Kingdom, Mainmark has earned international recognition as an award-winning ground engineering organisation.

    Peace of mind

    Our product is backed by a 50 year product warranty and a licensed builder that provides Home Owners Warranty Insurance and Builders Warranty Insurance in every state across Australia – providing you with peace of mind that you are working with a reputable company.

    Compliant & Accredited

    We are committed to satisfying customers, maintaining a safe work environment, minimising environmental impacts, and managing risks. By implementing and monitoring these systems, we consistently meet or exceed customer expectations, comply with legal requirements, and strive for continuous improvement.

    Mainmark

    © 2026 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

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    Melbourne

    New South Wales

    Perth

    Queensland

    South Australia

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    Victoria

    Western Australia

    Sectors

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    Technologies

    Teretek®

    Terefil®

    JOG

    About Us

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    Locations
    Mainmark Sydney

    Level 7/124 Walker Street, North Sydney NSW 2060

     

    Mainmark Melbourne

    Unit 8, 33 Rosalie Street, Springvale VIC 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

    Mainmark Tasmania

     4/11 McRorie Court Cambridge TAS 7170

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