House Restumping in Werribee & Melbourne's West

Restumping, reblocking, relevelling — which do you need?

These words get used loosely, and contractors do not all mean the same thing by them, so here is how we use them.

Restumping and reblocking mean the same job: replacing the stumps your house sits on. Australians use both, and Victorians lean towards "reblocking" — you will see it in half the business names across Melbourne. If someone quotes you for one and someone else quotes for the other, you are comparing the same work.

Relevelling is a smaller and genuinely different job: adjusting and packing the stumps you already have to bring the floor back to level, without replacing them. It is cheaper, and where the stumps are structurally sound it is the honest answer.

Part of quoting properly is telling you which of the three you actually need. Not every sloping floor needs a full restump.

How to tell if your stumps have gone

The tell-tales owners notice first, roughly in the order they appear:

Doors and windows that stick, or swing open on their own

Floors that bounce or feel springy underfoot, particularly in the middle of a room

Visible slope — the marble test is crude but it works

Gaps opening between skirting boards and the floor

Cracked plaster, especially above door frames

Cracks in external brickwork

Here is the part that matters, and it is why a visual look under the house is not enough: timber stumps rot from below ground level. A stump can look completely sound where you can see it and be gone 100 millimetres down. Assessing properly means digging down beside stumps, not just shining a torch under the floor.

Concrete or galvanised steel?

Both are a very long step up from the timber they are replacing.

Concrete stumps are the default in Melbourne and the most common choice nationally. They are strong in compression, unaffected by rot and termites, and last decades.

Galvanised steel stumps are lighter to handle, which matters where subfloor access is tight, and they are adjustable — the thread lets a floor be re-levelled later without excavating. That adjustability is genuinely useful on reactive clay, where seasonal movement is a fact of life.

We will tell you which suits your subfloor rather than defaulting to whichever we have on the truck. Where access is poor, steel is often the only sensible answer.

Why Melbourne's west moves

This is not a district where houses settle once and stop.

Werribee, Hoppers Crossing, Tarneit and Point Cook sit on reactive clay — mostly Class M and H1 under AS 2870, with more reactive H2 pockets through the older Werribee and Wyndham Vale flats, and P-classified sites where land was previously farmed and filled.

Reactive clay swells when it takes up water and shrinks when it dries. Over a hot Werribee summer the ground under one side of a house can shrink while a shaded or better-watered side does not, and the house is dragged out of level. Add a large gum drawing moisture from one corner, or a leaking stormwater connection soaking another, and you get the uneven movement that pulls stumps out of plumb and cracks plaster.

Fixing the stumps without fixing the water is how houses end up restumped twice. We look at drainage and vegetation while we are quoting, and we will tell you if that is the real problem.

Permits, and who is allowed to do this

Restumping is structural building work, and in Victoria it needs a building permit under the Building Act 1993. That permit is issued by a private registered building surveyor, not by council over the counter.

Two consequences worth knowing:

This is not owner-builder work. Victoria does not permit owner-builders to carry out subfloor work of this kind. It has to be done by a registered builder holding the reblocking and restumping class.

Unpermitted structural work follows you. It surfaces in a building inspection when you sell, and it can complicate an insurance claim. A cheap quote that skips the permit is not a saving, it is a deferred problem.

Where the contract value is over $16,000, statutory builder's insurance also applies — the cover Victoria has run as Domestic Building Insurance, and which has moved to Home Warranty for new contracts from 1 July 2026. Ask any contractor to show you the certificate for your job.

What it costs, honestly

Published figures vary widely, and you should be suspicious of anyone quoting one number sight unseen.

Per stump, the ranges published across Melbourne run from roughly $280 to $550 at the lower end of the estimates, and $400 to $1,000 at the wider end, depending on material, depth and access. Concrete stumps supplied and installed commonly land around $500 to $800 each.

For a whole house, a typical three-bedroom weatherboard with 40 to 60 stumps generally falls between $10,000 and $18,000, with full restumps across Melbourne quoted anywhere from about $12,000 to $35,000 on harder sites.

Treat all of those as indicative ranges rather than a price. The four things that actually move your number:

1. How many stumps the house has 2. Subfloor clearance — a crawl space you can sit up in is a different job to 400 millimetres of belly-crawl 3. Concrete or steel, and how deep the footings must go for your soil class 4. Whether the floor comes up — working from underneath is cheaper where clearance allows it

If three quotes come back thousands apart, that is normal, and it usually reflects different assumptions about those four things. Ask each quote to state the stump count, the material and whether the permit and engineering are included — that is what makes them comparable.

What the week looks like

Most jobs run three to seven working days. A partial restump of one section can be one to three days; a full restump of a larger or awkward house can run seven to nine, and difficult sites longer again.

The house is jacked gradually and in sequence rather than lifted in one go, because that is what keeps plaster cracking to a minimum. Some hairline cracking at existing weak points is normal and expected — a contractor who promises none is overselling.

Expect the house to keep settling gently for one to two months afterwards. That is why cosmetic patching and repainting should wait rather than happen the week the scaffold leaves.