How Much Does Slab Demolition Cost in Coffs Harbour?
Slab demolition in Coffs Harbour typically runs between $50–$150 per square metre, depending on the scope and conditions of the job. As a rough guide:
- Small shed or patio slab: $500–$1,500 all-inclusive
- Larger garage or full house slab: $3,000–$8,000+
Several factors influence where your job lands within that range:
- Slab thickness — standard residential slabs run 85–100mm; commercial floors are commonly 150–200mm or more
- Reinforcement type — mesh reinforcement vs post-tensioned tendons requires very different approaches
- Site access — restricted backyard access limits machinery options and increases hand-breaking time
- Post-tensioning — requires specialist assessment before any cutting work begins
- Disposal and haulage — charged by load; recycled crushed concrete can offset the overall cost
- Saw cutting — partial removals require precise cuts at the demolition boundary
For an accurate figure on your job, the best starting point is a free on-site quote.
Types of Slab Demolition We Handle
Technical Considerations in Slab Demolition
Slab Thickness & What It Means for the Job: Residential slabs typically run 85–100mm thick. Commercial floors are commonly 150–200mm or more. Thickness directly affects the equipment needed and the time required to complete the job.
Steel Reinforcement & Waste Separation: Reinforcement density affects both breaking effort and waste handling. Heavily reinforced slabs generate significant steel that must be separated from concrete rubble before disposal or recycling.
Post-Tensioned Slabs: Post-tensioned slabs are occasionally found in commercial buildings and some residential applications. Cutting tendons releases stored energy — a genuine safety risk. Specialist assessment is required before any cutting or breaking work begins.
Embedded Services: Drainage pipes, conduits, and plumbing are sometimes cast directly into the slab. We identify and manage these during the site inspection, so they’re accounted for in the methodology before work begins.
Equipment Used for Slab Demolition
The equipment we bring to a slab demolition job is matched to what the site actually needs. For open-access sites, an excavator with a hydraulic hammer attachment is the most efficient way to break up a slab — it’s fast, powerful, and well-suited to slabs of varying thickness and reinforcement. Where access is restricted, a jackhammer gets the job done without the footprint of larger machinery. A concrete saw handles boundary cuts on partial removals, keeping the cut clean and the remaining slab intact. Once the slab is broken up, a bobcat or skid steer moves the rubble efficiently into the truck for removal.
Equipment selection always comes back to the site assessment. Slab size, thickness, access, and proximity to adjacent structures all determine what goes on the truck. Using underpowered or wrong equipment is the primary cause of slow, costly, and damaging slab demolition work — and it’s something we avoid by getting the assessment right before anything else.
Rubble Removal & Concrete Disposal
Slab demolition generates a serious volume of heavy material. A standard 6×6 metre garage slab can produce several tonnes of broken concrete — and getting that off-site efficiently is just as important as the breaking work itself. Rubble is broken down into manageable pieces, loaded by bobcat, and removed by truck. Larger slabs may require multiple loads, and we factor that into the quote upfront so there are no surprises on the day.
Where possible, broken concrete is recycled as road base or fill material rather than sent to landfill. It’s a practical outcome that reduces disposal costs and puts the material to good use.
During loading and removal, we take care to protect adjacent structures, gardens, and any services running near the work area. Driveway surfaces, fencing, and landscaping are all considered when we plan the removal route. The site is left clean and clear at the end of every job — ready for the next stage of your project.
Slab Demolition Across Coffs Harbour & Surrounds
We carry out concrete slab demolition across Coffs Harbour and the surrounding region — including Sawtell, Woolgoolga, Toormina, Boambee East, Bellingen, and Nambucca Heads.
Coffs Harbour’s subtropical climate accelerates concrete deterioration faster than in the southern parts of Australia. Heavy seasonal rainfall, intense UV, and coastal humidity mean slabs that might last decades elsewhere are showing serious wear much sooner — driving steady demand for slab removal and replacement across established suburbs throughout the region.
Growing knockdown rebuild activity across older pockets of Coffs Harbour adds to that demand. Local knowledge matters on these jobs — familiarity with access constraints, council requirements, and site conditions across the area means fewer surprises and smoother project delivery.
From Slab Removal to New Concrete — One Contractor
Many clients need more than just the old slab removed — they need a new concrete surface poured in its place. Working with a single contractor across both stages means no handover gaps, no miscommunication between trades, and one point of accountability from demolition through to finished pour.
At A1 Concreting Coffs Harbour, we handle both. Once the old slab is out and the site is cleared, we can move straight into the new concrete work — whether that’s a new shed or garage slab, a driveway, a patio, or a full house slab for a knockdown rebuild project.
Whatever comes after the demolition, we have the crew and equipment to get it done.
Frequently Asked Questions
In most cases, a standalone slab removal doesn’t require council approval. If the demolition is part of a larger project — like a knockdown rebuild — permits will be required. We can advise on what applies to your specific job during the site assessment.
A standard shed or garage slab can typically be broken up and removed in a single day. Larger slabs — full house floors or commercial spaces — may take two to three days depending on size, thickness, and access.
Yes. Where excavator access isn’t possible, we use jackhammers and smaller equipment to get the job done without damaging fences, gardens, or adjacent structures.
We load and remove all rubble from the site. Where possible, broken concrete is recycled as road base or fill material rather than sent to landfill.
Post-tensioned slabs are more common in commercial buildings, but do appear in some residential applications. If there’s any indication your slab may be post-tensioned, we carry out a specialist assessment before any cutting or breaking work begins.
Yes. We saw the cut precisely at the demolition boundary before any breaking began. This protects the integrity of the slab that stays in place.
We handle everything. Rubble is loaded and removed by our own trucks — you don’t need to organise separate disposal.
Get a Free On-Site Quote
We provide free on-site quotes for all slab demolition work across Coffs Harbour and its surrounds. No obligation — just a clear, itemised quote provided before any work begins.
Get Your Free Quote
📞 Call us today at 0483904985
We service Coffs Harbour, Sawtell, Woolgoolga, Toormina, Boambee East, Bellingen, and Nambucca Heads. We aim to respond to all enquiries within 24 hours.
