Operating for 36 Years I 150+ Years of Experience I 87,000+ Jobs Completed I Iso Accredited I In-house Engineers

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Problems We Solve

We Solve Problems To Protect Your Asset

Overview

Residential Problems We Solve

Since 1989, Mainmark has raised, re-levelled and re-supported homes and other residential buildings, delivering successful solutions to thousands of properties.

Our ground improvement and level correction methods can address foundation subsidence and are effective for helping to fix cracks in walls or re-level sunken floors in homes of any size. Our solutions are also used for slab lifting foundation slabs and large driveways.

Problems We Solve
For Our Clients

Cracked Walls

Fast, cost-effective and non-invasive subsidence solution to fix cracked walls.

Sinking Floors & Slabs

Fast, clean and non-invasive lifting of sinking floors and concrete slabs.

Jammed Doors or Windows

Our solutions are more cost-effective, with minimal disruption to the area.

Out of Level Concrete

We offer the most advanced house re-levelling and underpinning technology in the market.

Earthquake Damage

The world’s most advanced earthquake remediation, liquefaction mitigation and ground strengthening technologies.

Underpinning Repair

Resin Injection – the modern alternative to traditional underpinning.

Residential Subsidence Repair

Before & After Treatment

Houses that need to be re-levelled often develop cracks in walls, sinking floors, sticking windows or jammed doors.

Our innovative solutions are designed to address sinking foundations and cracked walls, ensuring long-lasting stability for your home. Whether it’s a sinking foundation or a cracked wall repair, sinking concrete floor or re-levelling a driveway, we provide tailored services to every job.

We offer a range of underpinning options, including resin injection underpinning and concrete underpinning, to help raise and relevel sunken structures. The cost of underpinning varies depending on factors like the extent of damage and the type of foundation. Our expert team specialises in underpinning footings and crack wall repair, ensuring your home is safe and secure for the future.

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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

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Technologies

Teretek®

Terefil®

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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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