Concrete Removal and Replacement.

Concrete Removal and Replacement in Bulimba

Concrete doesn't last forever. In Brisbane's Inner East, the combination of clay-heavy soil, seasonal wet-dry cycles and mature tree roots means even well-laid concrete eventually cracks, lifts or sinks. When that happens, patching usually just delays the inevitable. Sometimes the right call is to pull it up and start again.

This page covers what that process actually looks like, how to know when you need it, and what it typically costs across the Bulimba, Hawthorne, Norman Park and Morningside area.

What the Work Actually Involves

Concrete removal and replacement is two jobs run back to back. The first half is demolition; the second is a fresh pour.

Demolition and removal typically involves a jackhammer or rotary hammer for smaller areas, or a small excavator and concrete saw for larger slabs like driveways and patios. The broken concrete (rubble) is loaded and carted away. This skip or truck hire is usually part of the job, but confirm that when you get a quote.

Site preparation comes next. The contractor will check the subbase, compact or replace fill if the ground has shifted, and install formwork to define the new edges. In many older Bulimba and Hawthorne blocks, this step uncovers the actual cause of the original failure, whether that's a root system, poor drainage or a compaction issue that was never fixed. Addressing that now is worth the extra time.

The pour follows standard residential concreting practice: reinforcement mesh or rebar where load demands it, a concrete mix suited to the application (typically 25 MPa for driveways, 20 MPa for paths and patios), and finishing to match or improve on what was there before. Curing takes around 28 days to reach full strength, though you can usually walk on the slab within 24 hours and drive on a driveway after about a week, depending on conditions.

Signs You Probably Need It

Not every cracked slab needs replacing. Here's what typically tips the balance toward removal rather than repair:

• Cracks wider than about 5-6 mm, especially if the two sides have shifted vertically (one edge is higher than the other)
• Sunken sections where water pools after rain
• A slab that rocks or flexes when you step on it, which suggests the subbase has failed
• Spalling or surface delamination across a large portion of the slab, not just a patch
• Tree root uplift that has pushed sections up by more than a couple of centimetres, common near the older street trees in Norman Park and Balmoral

If the damage is isolated to one small corner and the rest of the slab is solid, a repair or partial saw-cut replacement might be the more economical option. A good contractor will tell you honestly which way to go.

What It Typically Costs in Brisbane's Inner East

Concrete removal and replacement is priced per square metre, but the final number shifts quite a bit depending on the job specifics.

As a rough guide for the Bulimba cluster:

• Removal and disposal alone: roughly $50-$100 per m² depending on slab thickness and access
• Full removal and replacement (standard broom-finish concrete): typically $150-$300 per m² all in
• A small footpath or courtyard (15-25 m²): often $2,500-$5,000
• A double driveway (40-60 m²): commonly $6,000-$12,000+

What moves the price up: restricted access (narrow side gates, tight inner-city blocks), thick slabs (some older properties have 150 mm driveways), significant subbase work needed, decorative finishes, or dealing with tree roots that require grinding or removal.

What moves it down: easy truck access, simple rectangular shapes, no drainage complications.

These figures are indicative. Get a site inspection before treating any number as a firm budget.

What's Usually in the Quote (and What Might Be Extra)

A typical quote for this service should include: demolition labour, skip or truck removal of rubble, formwork, concrete supply and pour, standard mesh reinforcement, and a basic finish.

Things that sometimes sit outside the base quote: tree root grinding, extra fill or compaction material, council permit fees (rare for residential replacement but worth asking), upgraded finishes like exposed aggregate, and rectifying drainage if a new channel or outlet is needed.

Ask your contractor to itemise the quote. It makes comparing two quotes far easier.

A Note on Safety and Licensing

Concrete work involves heavy equipment, noise and dust. Silica dust from cutting concrete is a genuine health hazard; contractors should use dust suppression or respiratory protection when saw cutting.

In Queensland, residential concreting work does not require a contractor's licence under the QBCC for jobs under $3,300 (materials and labour combined), but most jobs of this scale will exceed that threshold. For work over $3,300, the contractor should hold a current QBCC licence. It's reasonable to ask for that licence number before signing anything.

Public liability insurance is also worth confirming, particularly on older Inner East blocks where driveways sit close to boundary walls or footpaths.

Is This the Right Service for Your Property?

If you have a slab that's structurally failed, not just surface-worn, and you want something that will last another 20-plus years, removal and replacement is the honest answer. Patching over a failed subbase is money spent twice.

If you're not sure, describe the damage when you reach out. The providers we connect you with cover the full Bulimba cluster and are used to the specific soil and drainage conditions across this part of Brisbane's Inner East. A quick conversation can usually point you in the right direction before anyone visits the site.