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Google Reviews

Easy, proficient and professional at all levels of interaction

Dealing with Mainmark has been easy, proficient and professional at all levels of interaction. The work commenced at our property was punctual and completed as quoted, the work site technicians were both courteous and informative and left the premises clean and tidy. There were visible signs of improvement upon completion of the job. We would highly recommend this company.

David Berman – SA

Highly recommend

Sam from Mainmark is very professional and honest. He inspected the whole house and checked the levels. He could have made it sound worse but is such an honest and professional person. He advised to maintain the property and keep an eye on the cracks. Many thanks Sam for your kind advice. Highly recommend him.

Harrison Singh – VIC


Above expectations

Boys went over above expectations.

Jock The Hoon – SA

Great result!

Professional, fast with great results.

Larry Jenkins – SA

Highly recommend

Excellent job done by the team (Dean , Louie, Scott Sean and above all Rob. Very hard working guys. Was really impressed with the work. Started seeing results straightaway while the job was being done. Highly recommend!

Arti Dhir – SA

Excellent job

I want to thank Jamie and his team for an excellent job. Jamie overcame very difficult access to do the job and then was very patient and clear about what had been done. I have no hesitation in recommending this company.

Janice Sloan – NSW

Completed on time and within budget

Excellent slab repair work. Completed on time and within budget. Helped removed fence panel to achieve best result and gave additional suggestions to re hang fence and adjust panels to allow for newly levelled slab. Cleaned up after themselves and polite and respectful throughout the process. Highly recommend.

Charles Jackson – NSW

Outstanding result!

A huge thankyou to the whole team at Mainmark for making our home liveable again. From first dealings with Brett right up until the absolute gun crew of Mal, Ian and Aaron who came on time and spent the duration of the day under trying conditions ending in an outstanding result. We can not recommend Mainmark enough, these guys really know their job 100%. Extremely happy clients. Sam and Allison

Allison O’Shea – NSW

Brilliant customer service and professional

Excellent customer service. Was concerned about potential subsiding foundation. Josh did a call out and checked flooring in house and spoke about issues. Brilliant customer service and professional. Thankfully our 1977 built home did not have any issues but if in future there services are required will be the only company I call.

Intuitive Di – NSW


Helpful and knowledgeable

Sam was helpful and knowledgeable and set us on the path to having our house issues rectified. Can recommend.

Tim Bowers – VIC

The team at Mainmark were very professional

The team at Mainmark were very professional, from the first person we dealt with on the phone to the team who came onsite to do the job. On the ball, knew their stuff, excellent service. Would happily use again.

Richard Black – NSW

A truely independent and friendly service

Today, I met with Sam Hassan from Mainmark Ground Engineering. Sam came to make an assessment of the movement in our home. Sam provided easily understood explanations of what could be causing the minor cracks in our home. He performed a, cost free, survey that showed that our house is not sinking as we suspected, but instead, water seems to be lifting the front of the house. This completely free assessment, is invaluable in providing reaasurance and some ideas of how to fix the problem without paying for work by Mainmark Ground Engineering unnecessarily. A truely independent and friendy service from Sam, who was able to explain what was happening is easily undedstood terms. A real hero. Thanks Sam. He and his company are highly recomended.

Trevor Langrish – VIC

Great result!

Great result, great service. Awesome Job thanks!

Scott Dunmore – NSW

I highly recommend Mainmark

I highly recommend Mainmark. They are very professional, honest and informative. Sam who came to assess my property explained what was causing my interior crack and provided information on what I need to check first. Was really happy with how explained the situation and probable cause.


A highly competent team all round

Really pleased with the work done by Mainmark on our 115-year-old much loved stone house. She’s a more stable old dame now. From the first meeting with Rob, who provided a superb overview of the process and expected results along with valuable readings of the situation, to the excellent work itself done by Shaun and his team, we are delighted with the result. A highly competent team all round who I have every confidence in recommending.

Greg Pike – SA

They were absolutely fantastic

Please don’t move forward with anyone else until you’ve spoken with this company. They were absolutely fantastic. The advice I was given they saved us thousands and thousands of dollars. Our home didn’t need underpinning as advised by other companies. Great job! Rob, was insanely helpful and polite. It’s nice to know there’s still some good people in business out there.

Bo – SA

There’s a reason why Mainmark is a leader in the industry

There’s a reason why Mainmark is a leader in the industry. Absolute professionalism and superior knowledge. Brendan is fantastic and put our minds at ease re subsidence query. Attended on time and was thorough in his assessment. His honesty is refreshing and did not push us into any unnecessary works. Cannot recommend him and Mainmark highly enough.

Miss Bee – NSW

Can highly recommend Mainmark

Michael & his team did a great job. Kept us informed throughout the project, which was finished in a timely fashion. Can highly recommend Mainmark.

Stephen – NSW

A highly professional company from the start

A highly professional company from the start. All phone calls were returned promptly, and communications within the company were excellent. Martin expertly assessed the problem, and Kevin and his team did a great job. I will recommend this company without hesitation.

Catherine – NSW

Very good, helpful & friendly staff

Very good, helpful & friendly staff. I have a 60+ yr old house with brick footings. One corner starting was starting to drop. I was only hoping for stabilisation, but they managed to close most of the gap. Kevin & his officer were very good, no damage & cleaned up well after finishing.

David – NSW

Mainmark have been fabulous to deal wit

From the quotation right through to carrying out work in our home, Mainmark have been fabulous to deal with. Professional, courteous and they know their stuff. Thanks to Sam and Mike who fixed up our foundations today, great job!

Adam – NSW

Mainmark did an excellent job to repair my driveway

Mainmark did an excellent job to repair my driveway as can be seen in the attached before and after photos.

Stefan – NSW

I highly recommend their services for their expertise and professionalism

recently had the pleasure of working with Mainmark for a driveway repair project in Kiama. Their team’s approach to lifting and repairing the sunken concrete driveway at one of our sites was nothing short of professional and efficient. The quality of work was outstanding, and their attention to detail was commendable. As a builder specialising in bespoke renovations, it’s crucial for me to collaborate with teams that maintain high standards, and Mainmark did just that. I highly recommend their services for their expertise and professionalism. Looking forward to our next project together!

Eli – NSW

Very cost effective solution

Had Kevin and his team come out to raise/stabilize a section of my house slab that had sunken, their work was very professional and the product worked as advertised. Very cost effective solution and would definitely use again if required.

Mick – NSW

Very professional and courteous service

Very professional and courteous service – from the initial appraisal and quote by Joshua, to the whole admin team, and through to the technicians, Mick, Sam and Jayden – the communication/explanation and final process, was efficient, competent and effective, which (along with a 50 year guarantee) provides necessary confidence and satisfaction.

Mark – NSW

Thank you Mainmark for your professionalism and outstanding work

We have an older home (80 years old) on a sloped block and it was starting to show some signs of subsistence (cracks in the walls, floor boards dropped). We had emailed and contacted a couple of companies and settled on Mainmark to provide advice and remediation works. Their communication was fantastic from our initial enquiry right through to the job being completed. We understood the issues, what work needed to be done, and the costs that were involved. All provided before we signed any contracts or made a deposit. On the day the team were on time and efficient in getting the job done. The work required them to be inside and outside our home. They were very respectful and cleaned up after completing the work. Just to add, the day the team worked was a very hot November day. This was no bother for them and they worked above beyond our expectations. Thank you Mainmark for your professionalism and outstanding work. We would recommended anyone to get in touch with them for issues regarding their home.

Sarah – NSW

The results are unbelievable

Kevin and his team were amazing! They explicitly explained the process to me and the results are unbelievable. I can now sleep peacefully at night knowing the problem has been solved and their work is guaranteed for 50 years. Everyone I spoke with from this business is lovely and helpful. I highly recommend Mainmark.

Tamara Finn – NSW

The Team were professional & friendly

We have had a substantial crack in our house foundation, Mainmark quoted a price that we accepted, the team arrived on time , carried out the repair to the house foundation to the extent that the crack closed up & The Levels of the brickwork came back to the correct position . The Team were professional & friendly, I will highly recommend this companies work .

Douglas Byron – NSW

Very streamlined process from start to finish

Extremely satisfied with the work performed by Mainmark. Very streamlined process from start to finish. Each step was explained by staff, who were very polite and respectful to both me and my home.

Catherine Pannam – VIC


Looking for a company with experience Mainmark are who you should use

Looking for a company with experience Mainmark are who you should use, will discuss your issues and give you a professional answer and explain what is happening. Had Connor out and he even checked levels for me for peace of mind.

Rod Higgins – VIC


On time, minimum disruption and cost effective solution

Professional service from a team of very good people. On-time, minimum disruption and cost-effective solution that is clean and guaranteed.!

Manual Vlandis – NSW

Job was done promptly and neatly

Had recurring subsidence issues in my garage after initial treatment in 2017. Manager came on site, we had a discussion about tree roots and retaining wall effectiveness and came up with a satisfactory solution. I received first cancellation and the job was done promptly and neatly.

Rejinx01 – QLD

Great confidence from beginning to the end

Many thanks to a great and professional team who gave me great confidence from the beginning (David in the office) to the end. Special thanks to Alan who came out to investigate my issue and in a calm way, explained what the problem was and how they would rectify it and of course, great work by the personnel from Mainmark who attended my home on Monday. I couldn’t be happier with the result!!

Julie Mclaughlin – VIC


Fantastic result on stabilising our foundation

Fantastic result on stabilising our foundation. Mal, Inoke & Sevoke were very polite and helpful and explained the process thoroughly and left the property clean and tidy. Extremely happy with the result and service by Mainmark and their expert staff. Will certainly recommend to anyone needing ground stabilising. Thank you

Peter Maghazey – NSW

The best solution to fix this problem was obviously resin injection

It was in March 2023 that a subsidence issue was found in my property in Ballarat as part of a building inspection report. The best solution to fix this problem was obviously resin injection. I got a number of quotes and consulted a number of experts to finally appoint the best ground engineering service for this purpose. Sam Hassan from Mainmark was able to gain my trust. He is very good at supporting the customer throughout the entire work process from the initial property inspection, to contract and price negotiations and finally the project completion. His careful assessment of the issue did make us organizing a drain inspection and helped us with discovering few drainage issues at the property as well which got addressed and fixed afterwards. Mainmark were really efficient and completed the Teretek injection in less than 4 hours. Polyurethane resin injection is an expensive service but when it becomes a necessity, it’d be better to be applied sooner than later and surely I highly recommend Mainmark Australia for this purpose.

Kirarash Mostafavi -VIC

The team from Mainmark were great.

The team from Mainmark were great. Did an excellent job. Very professional and friendly. Thank you Ben, Dylan, Anv and Steve. Great job!

Samuel Tasdelen – VIC

Brilliant workmanship

Big thanks to Steve, Ben & Anu. Brilliant workmanship and extremely helpful. Cheers guys.

Mick Nigro – VIC

HIghly recommend!

Highly recommended! We noticed a crack appear in one of the walls in our house and wanted to have our concrete slab checked to see if it was sinking before it got worse. We called Mainmark Ground Engineering and they sent out Connor and Philip to do an assessment and quote. We were a bit nervous about what they would say because we had no idea about what could be wrong or what it could cost to fix. They were super friendly and professional and did a detailed level check of the entire floor with some high tech looking devices and came to the conclusion it was nothing to worry about, it was just sessional movements from the weather getting hotter and the house expanding a little.They also gave us advice on what to look out for with concrete slabs in the future. We really appreciate the effort and attention to detail they showed. It’s refreshing to deal with people like this, I’d recommend these guys to anyone!

Claire Tao – VIC

Mainmark did an exceptional job

Mainmark did an exceptional job correcting a running crack in our brickwork. Peace of mind with a 50-year warranty is also a great selling point. Chuffed with the end result.

Nathanael Jeanneret – VIC

Communications with head office (lovely Sandy) were faultless!

Martin came out to inspect my property and from the get-go – I knew I would end up choosing Mainmark. Martin took the time to review the property and also spent time discussing the issues with me. A clear scope of work & a quote came quickly. Once I accepted the quote, communications with head office (lovely Sandy) were faultless! I was considered in all plans. On the day of the job, 3 top blokes (Kevin & crew) turned up on time and were not only focused, but super friendly. They left the work area clean & tidy. The end result – incredible! My driveway and concrete pathway is no longer sinking with unsightly gaps. I’m thrilled! Within a day of final payment, I was given my 50 year warranty certificate. Thanks Mainmark! Can’t recommend you guys enough!

Kate Chapman – NSW

great technical advice and fast service

Excellent service and product, great technical advice and fast service. Left site very tidy

Jo Watts – SA

I am very pleased with the results

Hi, I have a high set house in Beenleigh QLD. I engaged Mainmark Ground Engineering to come out and see if they can help to firm up and lift corner of the house and provide a quote. I was a bit unsure whether to accept quote and go ahead with work, but the area manager Brett was great he said we will be able to close gap as he was a experienced installer of the product used. He knows his job and gave me the confidence to go ahead with the work, I am very pleased with the results thanks Brett and Mainmark Ground Engineering team. Sorry no photos of crack before.

Colin Healy – QLD

Our cracks resolved in front of my eyes

Our cracks resolved in front of my eyes. Incredible. Unfortunately the gap between the ceiling and roof is still a big problem that we still need someone to help us sort out. Excellent customer service

Graham Straughan – SA

Professional insight, honesty and expertise

Just had Paul come out today to look at a crooked garage wall for us. He explained the likely causes and suggested that we resolve some of the environmental issues first as their solution wouldn’t be appropriate until this was done. Really appreciated his professional insight, honesty and expertise.

Joe K – VIC

A very well oiled operation!

Every touch point as part of the process (from calling with an initial enquire to the team turning up on time on the day of the job) was seamless and easy. Well done Mainmark on having a very well oiled operation! We were told the team would need to cut holes in floor boards as part of the job. I expected there to be some work for us to repair the boards when they finished however, it was all repaired for us on the day. Very happy with the result.

Trilby McNeilage – VIC

Professional from first contact

Professional from first contact, this company kept us informed from the very beginning. We are more than happy with our results and highly recommend them. Every staff member was informative, approachable and felt they couldn’t do enough for us. A special thank you to Davide, Dr. Phil, George, Ben ( a perfectionist ), Nick and Dillon for making this process seamless and we enjoyed meeting you. Very rarely do you find a company that you genuinely like all the staff members, great team Thank you Mainmark

Anne Rose – NSW

The people onsite are very professional and polite

The people onsite are very professional and polite. Shaun are very informative and helpful also Rob Voyle paid a visit on the day on the job. The managements are informative about the dated of the job they are reliable. So thank you all.

Antonio Buco – SA

Extremely helpful

Mainmark were extremely helpful in assisting us to rectify a troubling building problem.

Catherine Maud – VIC

Very professional service from start to finish

Very professional service from start to finish. The guys lifted and levelled my footing, being so careful not to damage my hedges. Wonderful outcome, job done as requested. Would highly recommend this Company. Great bunch of guys.

Dianne Plumb – NSW

The team were competent, knowledgeable and flexible

The mainmark underpinning service for this 60s dwelling was an affordable and guaranteed solution to an obvious former stability issue due to former poor drainage. The team were competent, knowledgeable and flexible. I would recommend Mainmark for a solution option in similar circumstances.

Kevin Holland – VIC


Would recommend them to anyone

Very informative, explaining what was being done through every step of the job, would recommend them to anyone who needs their house relevelled. This crack has been closed significantly, the sun doesn’t shine through it any more ?? …

Kim Rist – NSW

Respectful and courteous

Would highly recommend the service from Mainmark. They were professional and did the job as expected. The guys that attended our house were respectful and courteous, we even baked chocolate fudge for them. I would highly recommend their services.

Terry Wenban – QLD

An exceptional job

Mainmark did an exceptional job correcting a running crack in our brickwork. Peace of mind with a 50 year warranty is also a great selling point. Chuffed with the end result.

Nathanael Jeanneret – VIC

Contacts were helpful & prompt

I have tried many solutions to my soil problem, then I came across an ad. for this product which is inserted into the ground to stabilise the soil , it’s from Mainmark Engineering Qld. All my contacts were helpful & prompt.

Margaret Wilcox – QLD


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