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Geotech Built Restumping, Underpinning & Foundations

4.9(42 reviews)
NSW

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About this business

Geotech Built specialises in underpinning, restumping, subfloor and foundation repairs, delivering high-quality subfloor work and structural solutions across New South Wales. The company combines over 30 years and three generations of experience with innovative, tried-and-tested methods, modern equipment, and a licensed builder personally overseeing all works to provide cost-effective, reliable service.

Service areas

Servicing NSW and surrounding locations.

See what local homeowners are saying

  • Tony

    19 Feb 2026

    John and his crew were straight forward and professional. Access to the subfloor was a crawl space. The work was carried out with professionalism and knowledge. My many questions were answered with ph...

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    John and his crew were straight forward and professional. Access to the subfloor was a crawl space. The work was carried out with professionalism and knowledge. My many questions were answered with photos and videos supplied along the way. I would highly recommend Geotech Built to rectify any foundation issues.

  • Claire Gibson

    29 July 2024

    We engaged John and his team to restump our 1912 cottage, replacing 40+ failed brick piers with new steel piers. John's communication was excellent from first visit, right throughout the project. We m...

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    We engaged John and his team to restump our 1912 cottage, replacing 40+ failed brick piers with new steel piers. John's communication was excellent from first visit, right throughout the project. We met with a few builders, but John was the only one that demonstrated real expertise and took the time to explain various options within our budget. Throughout the project, he shared regular updates with a clear, transparent approach, and is passionate about delivering a great end result. The team was professional and punctual, making the entire process smooth and stress-free. I highly recommend John and his Geotech team!

  • Lianne Keeghan

    31 Oct 2024

    Absolutely amazing. We needed re stumping under our house, John was very professional, explained everything, gave us clear understanding of work that needed to be done, explained all processes. The te...

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    Absolutely amazing. We needed re stumping under our house, John was very professional, explained everything, gave us clear understanding of work that needed to be done, explained all processes. The team were exceptional, they arrived on time, we were really happy to hear them laughing and singing while doing their work as it told us they were happy and enjoying their job, as everyone knows if your happy in your job your work is great, and their work is fantastic. John and his team were professional, respectful and helpful. Highly recommend Geotech Build.

  • John Tran

    19 Nov 2024

    John and the team at Geotech Built did a great job with significant subfloor works to our 1930s home which had quite a number of subsided brick piers, as well as bearers that had some previous termite...

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    John and the team at Geotech Built did a great job with significant subfloor works to our 1930s home which had quite a number of subsided brick piers, as well as bearers that had some previous termite damage - resulting in a few rooms with sloping and uneven floors. The team worked quite hard in a very tight crawl space to replace all the damaged piers and bearers and finally jack up the floors, levelling it all out to provide a strong foundation. He made sure we had a clear understanding of the process and any impacts the works would have, giving us confidence throughout. Would strongly recommend GeoTech as your best option for any restumping works.

  • D Mak

    16 May 2024

    GeoTech Built is a reputable building company specialising in underpinning and foundational work. When I mentioned the issue we were enquiring about, John was able to quickly and concisely tell me the...

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    GeoTech Built is a reputable building company specialising in underpinning and foundational work. When I mentioned the issue we were enquiring about, John was able to quickly and concisely tell me the problem and how it should be fixed. He also gave me a range of quotes depending on our budget. GeoTech are professionals who are highly experienced in this space.

  • Manish Gupta

    27 Feb 2024

    John and team did a great job replacing subfloor pillars for our old house with subsided brick piers 2 years ago. John attended to the flooring level works himself and clearly understands his work wel...

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    John and team did a great job replacing subfloor pillars for our old house with subsided brick piers 2 years ago. John attended to the flooring level works himself and clearly understands his work well and takes pride in the outcome. I consulted several companies prior to choosing John as I felt the most comfortable and wasn’t wrong in doing so, given the works were done a while ago now and still can’t fault anything.

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Frequently asked questions

How much do builders typically charge?
Builder costs vary widely depending on the job type and complexity. Minor repairs are generally much less than extensions, small builds or structural alterations that need foundations, framing or specialist input. Most quotes include a call‑out fee plus labour and materials, and the page shows live pricing to help you compare options.
Do builders charge call-out fees?
Call‑out fees are common and typically cover travel and an initial inspection or assessment. This fee is usually separate from hourly labour and materials, and after‑hours or weekend attendance often attracts higher rates. Ask whether a call‑out or minimum charge applies when requesting quotes.
Do builders need a licence in Australia?
Yes. Building work generally needs to be carried out by a licensed builder in every state and territory, and NSW builders are regulated by NSW Fair Trading. Builders should be able to provide their state builder/contractor licence number and show appropriate insurances and ABN/GST registration. In Victoria, domestic building insurance is required above a state threshold for certain contracts.
Is Geotech Built Restumping, Underpinning & Foundations licensed?
Yes. Geotech Built Restumping, Underpinning & Foundations currently shows an active trade licence on SureQuote.
How do I get a quote from Geotech Built Restumping, Underpinning & Foundations?
Geotech Built Restumping, Underpinning & Foundations lists email or through their website on this profile, so you can contact them directly for pricing and availability. Share a short scope and photos to get a faster quote.
What areas does Geotech Built Restumping, Underpinning & Foundations service?
Geotech Built Restumping, Underpinning & Foundations services Sydney, Wollongong, Central Coast, and New South Wales and surrounds. Contact them to confirm service areas.
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