How Relevelling Works in Homes with Timber Stumps

If you own an older home in Sydney, there’s a good chance it’s built on timber stumps . These stumps were the go-to foundation method for decades, but like anything made of wood, they don’t last forever. Over time, they can rot, sink, or shift, leaving your house sitting unevenly on unstable ground.

That’s where house relevelling comes in.

In this guide, we’ll walk you through how the process works for timber-stumped homes, what signs to watch out for, and why acting early can save you serious repair costs down the track.

What’s the Problem with Timber Stumps?

Timber stumps were once a practical and affordable way to support homes, especially raised Queenslanders and weatherboard cottages. But timber is vulnerable to:

Rot and moisture damage, especially in poorly ventilated subfloors
Termite attack, which weakens the structural integrity
Sinking, as the soil beneath shifts or compacts over time

When stumps start to fail, the house becomes unlevel. You might notice uneven floors , cracks in walls, doors that don’t shut properly, or a springy, bouncy feeling underfoot.

How Relevelling Works for Timber-Stumped Homes

The good news is that timber-stumped homes are generally easier to relevel than concrete slabs, as long as the problem is caught early.

Here’s how we do it at Sydney House Leveling:

1. Inspection and Level Check

We start with a thorough site inspection. Our team will:

Measure floor levels across different rooms
Check the condition of existing timber stumps
Identify signs of movement or structural stress
Assess subfloor ventilation, drainage, and soil conditions

2. Create a Levelling Plan

Depending on how many stumps have failed and how far the house has moved, we’ll recommend either partial or full restumping , along with any needed structural levelling .

3. Lift and Support the House

Using hydraulic jacks, we carefully lift the home in sections to correct uneven areas. This is done gradually and with precision to avoid cracking or damage during the lift.

4. Remove and Replace Stumps

Old timber stumps are removed and replaced with more durable materials, usually:

Galvanised steel stumps, which resist rust and termite damage
Concrete stumps, ideal for wet or reactive soil zones

The new stumps are installed at the correct height to bring the home back to level.

5. Final Adjustments and Checks

We’ll recheck levels, ensure all stumps are aligned and seated correctly, and check that doors, windows, and internal finishes are functioning properly. If needed, we can also recommend floor levelling to fix any surface dips or bumps.

How Long Does It Take?

Most timber stump relevelling jobs take between a few days to two weeks, depending on access, number of stumps, and overall condition. In many cases, you can stay in the home while the work is being done, especially if we’re only restumping part of the house.

Is Relevelling Permanent?

With modern materials and proper drainage in place, yes — house relevelling can be a long-term fix for homes with timber stumps. We use high-quality stumps and proven methods designed to last for decades.

Ongoing maintenance, like keeping water away from the subfloor and checking for termite activity, helps prevent future issues.

Do You Need Relevelling?

Here are the key signs your timber-stumped home might need a check-up:

Floors feel uneven, soft, or bouncy
Visible gaps between walls and skirting
Cracks in walls or ceiling cornices
Doors or windows sticking
Noticeable lean in parts of the house

If you’re seeing any of these, book a free inspection and we’ll give you a clear idea of what’s going on.

Expert Help for Sydney’s Timber Homes

At Sydney House Leveling, we specialise in relevelling timber-stumped homes across Sydney, from heritage cottages to post-war bungalows. We know the quirks, challenges, and best fix for each structure.

We offer:

Free site inspections
Honest, practical advice
Long-lasting results with steel or concrete stumps

Let’s get your home back on solid, level ground — the right way.

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Underpinning Explained: When Is It Necessary in Sydney?

August 22, 2025

Underpinning Explained: When Is It Necessary in Sydney? If you’ve noticed cracks in your walls, doors that don’t close properly, or uneven floors, your home’s foundation could be trying to tell you something. In Sydney, where many homes sit on reactive clay soils or older footings, foundation issues aren’t uncommon—and underpinning might be the solution you need. But what exactly is underpinning, and how do you know if it’s necessary for your property? Let’s break it down. What Is Underpinning? Underpinning is the process of strengthening and stabilising the foundation of an existing structure. It involves extending the foundation depth or spreading the load to more stable soil. This ensures that your home remains level, safe, and structurally sound for years to come. For Sydney homes, underpinning is commonly used in house leveling projects to correct subsidence (sinking or movement in the foundation). When Is Underpinning Necessary? Not every crack in your wall means you need underpinning, but here are key signs that suggest it might be time to call in the experts: 1. Significant Foundation Movement If your house has shifted or sunk noticeably, especially in areas with clay-rich or unstable soil, underpinning is often the best long-term solution. 2. Large or Widening Cracks Hairline cracks are normal, but wide cracks (5mm or more) in walls, ceilings, or brickwork indicate serious foundation movement. 3. Uneven or Sloping Floors If your floors slope or feel bouncy, your foundation may no longer be stable. 4. Doors and Windows Sticking When the foundation moves, door and window frames can warp, making them hard to open or close. 5. After Renovations or Extensions If you’re adding a second story or extending your home, underpinning may be required to ensure the foundation can handle the extra weight. Why Underpinning Is Common in Sydney Sydney’s mix of reactive clay soils, older homes, and variable weather conditions makes foundation movement a common issue. Droughts, heavy rainfall, and tree roots can all cause the soil to expand or contract, leading to subsidence. If your home is more than 30 years old or built on sloping ground, regular foundation inspections are a smart precaution. What Happens During Underpinning? The process typically involves: Assessment & Soil Testing – Engineers inspect the site and test soil conditions. Excavation – Sections under the foundation are carefully dug out. Concrete or Resin Injection – New footing material is added to strengthen and level the foundation. Monitoring – The foundation is checked for movement to ensure long-term stability. The exact method depends on your home’s construction and the severity of the issue. Do You Need Underpinning or Just House Leveling? Not all foundation problems require full underpinning. Sometimes, house leveling alone —lifting and adjusting the existing stumps or piers—can fix the problem at a lower cost. A professional assessment will determine whether house leveling or underpinning (or a combination of both) is the right approach. Talk to a Sydney House Leveling Expert If you’ve spotted any of the warning signs, don’t wait—foundation problems only get worse (and more expensive) over time. A professional house leveling and underpinning expert can inspect your property, explain your options, and recommend the best solution. Need help with your Sydney home’s foundation? Get in touch with our experienced team today for an inspection and personalised advice.

Metal support jacks installed under a wooden beam in a dark crawlspace, providing structural support.

Concrete vs. Steel Underpinning: What’s Best for Sydney Homes?

August 18, 2025

Concrete vs. Steel Underpinning: What’s Best for Sydney Homes? When foundation issues strike, underpinning is often the best solution to stabilise and level your home. But which method should you choose— concrete underpinning or steel underpinning ? Both are effective, but the right choice depends on your home’s construction, soil type, and how severe the foundation movement is. Here’s a breakdown to help Sydney homeowners make an informed decision. Concrete Underpinning: The Traditional Choice What It Is Concrete underpinning involves digging under your existing foundation and pouring concrete to create a deeper, stronger footing. Pros Proven and Reliable – A traditional method with decades of successful use. Cost-Effective – Generally cheaper than steel underpinning for standard residential jobs. Great for Large Areas – Ideal for homes with widespread foundation movement. Cons Slower Installation – Excavation and curing take time, so the process can take weeks. Messy and Disruptive – Requires significant digging around your home. Not Ideal for All Soils – Less effective in very loose or sandy soils. Steel Underpinning: The Modern Alternative What It Is Steel underpinning uses screw piles or driven steel piers installed deep into stable soil or bedrock, then attached to the foundation to lift and support the home. Pros Faster Installation – Can be completed in days, not weeks. Minimal Excavation – Less disruptive to gardens and landscaping. Ideal for Problematic Soils – Works well in Sydney’s reactive clay and sloping blocks. Immediate Load-Bearing – No waiting for concrete to cure. Cons Higher Cost – Steel is generally more expensive upfront. Not Always Necessary – Overkill for minor subsidence issues. Which Is Best for Sydney Homes? Both methods work, but here’s a quick guide: Choose Concrete Underpinning if… ✔ Your home has widespread subsidence or needs a large foundation area reinforced. ✔ You’re on a tighter budget and don’t mind a longer project timeline. Choose Steel Underpinning if… ✔ You’re on reactive clay soil (common in Western Sydney). ✔ Your home is on a sloping block or needs deep stabilisation. ✔ You want a fast, less disruptive solution . In many cases, engineers may recommend a combination of both methods, depending on your property’s unique conditions. Need Expert Advice? Choosing the wrong underpinning method can cost you more in the long run. If you’re noticing cracks, uneven floors, or doors sticking , it’s time to have your foundation professionally assessed. Talk to Sydney’s House Leveling Experts We’ll inspect your home, explain your options, and recommend whether concrete or steel underpinning is best for you. 📞 Call us today to book an inspection and get a tailored solution for your Sydney home.

The Risks of Delaying Underpinning Repairs

August 11, 2025

Noticed cracks in your walls? Doors sticking? Uneven floors? These are early signs of foundation problems—and if you delay repairs, you could be setting yourself up for bigger headaches (and costs) down the track. For Sydney homeowners, where reactive clay soils and changing weather conditions often cause foundation movement, underpinning can be the difference between a stable home and major structural damage. Here’s why delaying underpinning repairs is never a good idea.

How Much Does Underpinning Cost in Sydney (2025 Pricing Guide)

August 11, 2025

If you’re dealing with foundation issues—cracks in walls, uneven floors, or sinking foundations—underpinning might be the solution. But how much should you expect to pay in Sydney in 2025 ? The truth is, underpinning costs vary depending on your home’s size, soil conditions, and how severe the damage is. Here’s a breakdown to help you budget before starting repairs.