Restumping advice
"Pier and beam foundation repair" — what that means in Australia
Published
If you’ve noticed your floor sloping, done the sensible thing and searched for what to do about it, there’s a decent chance you’ve hit a wall of American content about “pier and beam foundation repair” — companies in Texas, Oklahoma and the southern US explaining how they shim piers under a crawl-space house. It reads like it should apply. Some of it does. Most of the specifics don’t, and the vocabulary gap is exactly why so many Melbourne homeowners end up confused before they’ve even had anyone look under their house.
This article exists to close that gap, because as far as we can tell, nobody local has actually written it.
What “pier and beam” means where the term comes from
In American residential construction, “pier and beam” describes a house built above a crawl space: the floor framing rests on beams, which in turn rest on piers spaced across the footprint, rather than the whole ground floor being poured as a concrete slab. It’s common across the southern and central US, partly because expansive clay soils there make a rigid, elevated timber floor easier to relevel than a slab.
If that description sounds familiar, it should — it’s structurally similar to how most of Melbourne’s older housing stock was built. A suspended timber floor sitting on posts above the ground, rather than a slab poured onto it, is the same basic idea. The terminology just went a different direction on each side of the Pacific.
What we call the same idea in Australia
In Melbourne, a suspended timber floor on individual timber or concrete supports is a stumped house, and the supports themselves are stumps — never “piers” in this context. Repairing or replacing them is restumping, or, in the older Melbourne trade term, reblocking (from when stumps were called blocks). Both words describe an identical scope of work; you’ll still hear tradespeople who’ve been at it for decades use “reblocking” on the same quote as “restumping,” and it’s not a different job.
Here’s the vocabulary side by side:
| American term | Australian equivalent |
|---|---|
| Pier and beam house / foundation | Stumped house / suspended timber floor |
| Pier (under a crawl-space house) | Stump |
| Foundation repair company | Restumping / reblocking contractor |
| Shimming or leveling a pier | Packing (a temporary fix, not the same as replacement) |
| Foundation | Sometimes stumps, sometimes footings — see below |
The wrinkle, and the reason this article exists, is that word: piers. In Australian foundation-repair conversations, “piers” is not the word for what’s holding up a stumped house. It’s the word for what goes in under a concrete slab that’s moved on reactive clay — underpinning piers, bored or screw piles taken down past the zone where the ground swells and shrinks with the seasons. Read American content, arrive here, and hear a Melbourne contractor talk about “piers,” and it’s easy to assume you’re reading about the same thing. You’re not. One is stumps under a timber floor; the other is piers under a slab.
Why the actual repair is different too, not just the words
This matters beyond vocabulary because the fix itself doesn’t transfer. A typical American pier and beam repair often involves adding or adjusting shims and packers under an existing pier to bring a sagging section of floor back level — a comparatively light, incremental adjustment, because the piers themselves are usually sound concrete and the house is younger.
A Melbourne restump is usually a different proposition, because the stumps being replaced are frequently the original ones: red gum or early concrete now 60 to 120 years old, rotted at ground level or settled into a footing that was never engineered in the first place. The house is jacked in small increments over several days, old stumps are dug out, new concrete stumps are set in proper footings — by machine where there’s side access, by hand where a single-fronted cottage in Yarraville or Footscray leaves no other option — and the whole structure is relevelled onto them. It’s building work under Victoria’s Building Act, requiring a permit issued through a registered building surveyor, with inspections at set stages. None of that comes up in a Texan crawl-space repair, because the regulatory framework, the age of the housing stock and the climate driving the movement are all different.
Where a Melbourne house does genuinely need something closer to what “pier and beam foundation repair” describes overseas — piers installed to correct movement — that’s underpinning, and it applies to a completely different construction type: brick veneer on a concrete slab, on reactive clay, in suburbs like Caroline Springs or Werribee, not a timber-floored stumped home at all.
How to tell which one you actually have
Before you take any quote seriously, this takes about five minutes:
- Knock on the floor. A suspended timber floor over stumps sounds distinctly hollow. A concrete slab does not.
- Look for subfloor vents or a manhole in the perimeter. If they exist, there’s a subfloor underneath — stumps, not a slab.
- Check how the movement behaves. Stumps fail one way: down, and it doesn’t reverse. Reactive clay under a slab often moves seasonally — cracks widening through a dry summer and partly closing after a wet winter point at ground movement rather than failed stumps.
If your house sounds hollow underfoot and has vents around the base, you’re in restumping territory, whatever the quote calls it. If it’s a rigid concrete slab with brick sitting directly on it, restumping isn’t even physically possible — there’s nothing under there to restump — and underpinning is the relevant service.
What it costs, in Melbourne terms
However the quote is worded, the numbers should land somewhere recognisable. A full restump across Melbourne typically runs $11,000 to $22,000, driven mostly by stump count and site access — wide blocks with machine access sit at the bottom, single-fronted inner-west cottages with hand-dug stumps sit at the top. Underpinning is priced differently again, typically $15,000 to $40,000, priced per pier at roughly $1,500 to $3,500 each. A quote using American terminology, or none of the above terms at all, doesn’t change what the job actually costs — it just makes it harder to tell what you’re being quoted for until you ask directly.
Not sure which one your search results actually describe? Tell us what your floor sounds like and whether it’s timber or slab, or book a free assessment — we’ll tell you plainly which service applies, in plain Melbourne terms.
Common questions
I searched 'pier and beam foundation repair' and everything I found was about Texas. Does any of it apply to my house?
The underlying construction idea does — a floor held up above the ground on separate supports rather than poured as a slab — but the specifics mostly don't transfer. American pier and beam homes are typically newer, sit on a crawl space over concrete piers, and are commonly releveled by shimming rather than replacing supports outright. A Melbourne stumped home is usually far older, sits on individual timber or concrete stumps, and Victoria's permit and construction requirements are entirely different. Read it for the general concept, then get a local assessment for the actual fix.
My quote mentions 'piers' — is that the same as the American 'pier and beam' term?
Usually not, and it's worth clarifying before you agree to anything. In Melbourne, 'piers' almost always means underpinning piers — concrete or screw piles installed under a concrete slab that's moved on reactive clay. That's a different job, on a different construction type, to the stumps under a suspended timber floor. If your quote says 'piers' and your house has a hollow-sounding timber floor rather than a slab, ask the contractor to confirm exactly what they inspected and what they mean by the word.
Why doesn't 'reblocking' come up when I search using American terms?
Because it's older, regional terminology that search engines don't automatically connect to 'pier and beam' or 'foundation repair'. Reblocking is simply the traditional Melbourne word for restumping, from the era when stumps were called blocks — tradespeople who've been in the industry longest still use it, sometimes on the same quote as 'restumping'. It's the same scope of work either way. If you're comparing quotes, the word used doesn't tell you anything about the price or the method.
Think this is happening at your place?
We assess before we quote — floor levels measured, cracks mapped, and a straight answer on whether you need work at all. Read more aboutrestumping & reblocking, or get in touch.