Construction and demolition (C&D) waste makes up roughly 39% of everything Australia throws out — close to 29 million tonnes a year — yet it is also our best-recovered material stream, with building and demolition waste recovered at around 84% nationally. That gap between what's possible and what most sites actually achieve is where the money is. This guide is the operational side of C&D recycling: how to recover concrete, timber, metal and plasterboard on site, when to use a skip versus a hook-lift bin, and how to stop paying the full Victorian landfill levy on loads that didn't need to go to landfill at all.
Why C&D recycling is a cost decision, not just a compliance one
Most builders treat waste as a line item that "is what it is". It isn't. In metropolitan Victoria the landfill levy alone is $169.79 per tonne in 2025-26 — up sharply from $129.27 the year before — and that's before the gate fee and transport. A single mixed skip can carry a tonne or more of concrete and rubble that, if separated, would attract little or no levy and often has a positive recycling value. The recovery rate for building and demolition material sits around 84% nationally and roughly 80% in NSW, second only to metals. Sites that hit those numbers aren't doing anything exotic — they're just keeping heavy, recyclable material out of the bin that gets weighed at landfill.
The four streams that move the needle
C&D waste is dominated by a handful of materials, and a small amount of segregation captures most of the value. By weight, the recoverable streams are:
- Concrete, brick and masonry — typically the largest fraction of a demolition load and the single biggest recycling win. Concrete and masonry make up the largest share of recovered C&D material; concrete is around 60% of recycled masonry. Clean rubble is crushed into road base and aggregate; recyclers often accept it at low or no cost, and a clean concrete-only bin avoids the levy almost entirely.
- Metals — steel, copper, aluminium and offcuts. Metals are the highest-recovered stream of all (well above 80%) and have genuine scrap value. Never let metal ride in a mixed bin; a dedicated cage or a scrap-metal merchant usually pays you.
- Timber — framing offcuts, formwork and pallets recover at roughly 40% nationally, mostly as mulch, animal bedding or engineered-wood feedstock. Treated and painted timber is restricted, so keep it separate from clean structural timber.
- Plasterboard — uncontaminated offcuts are fully recyclable back into new board or gypsum soil conditioner, but only through specialist facilities. Plasterboard in a mixed bin is a contaminant; segregated, it's a recyclable.
Soil and fill are a separate question — they may need testing for contamination before they can be reused or disposed of, and contaminated material can fall into priority-waste categories with much higher levies. If you're planning streams formally for a permit, our construction waste management plan guide covers the documentation councils want to see.
Skip versus hook-lift: matching the bin to the job
The bin you choose largely determines whether segregation is even practical. The two workhorses on Australian sites are marrel (skip) bins and hook-lift bins, and they suit very different jobs.
| Factor | Skip / marrel bin | Hook-lift bin |
|---|---|---|
| Typical size | 2–9 m³ | 10–30 m³ |
| Best for | Reno, fit-out, tight residential sites | Demolition, bulk concrete, large new builds |
| Access | Fits driveways and laneways | Needs a clear, firm hardstand and truck access |
| Segregation | Run two or three small skips per stream | One large bin per stream; high volume per lift |
| Cost driver | Per-lift price plus levy on weight | Lower cost per m³, but you pay for the volume |
The practical rule: if you can fit two or three skips for separate streams, you'll almost always beat a single mixed bin once the levy is factored in. On larger demolition jobs, a dedicated hook-lift for clean concrete plus a smaller bin for mixed residual is usually the cheapest configuration. We break the economics down further in our skip bin vs regular collection comparison.
How mixed C&D gets charged — and why it stings
When a bin is mixed, the whole load is generally treated as general waste and weighed at the landfill gate, so every tonne attracts the full $169.79/tonne metro levy plus the gate fee. Separate that same load into a clean concrete bin and a smaller mixed-residual bin, and only the residual portion carries the full charge. On a demolition where 60–70% of the weight is masonry, that's the difference between paying the levy on the whole job and paying it on a third of it.
| Approach | What goes to landfill | Levy exposure (per 10 t job) |
|---|---|---|
| One mixed bin | ~10 t treated as general waste | ~$1,698 levy + gate fees |
| Concrete separated, residual binned | ~3 t residual; 7 t concrete recovered | ~$509 levy + gate fees |
Figures are indicative — actual savings depend on your material mix, recycler gate fees and haulage. The point holds at any scale: separation shrinks the weight you pay levy on.
Hitting diversion targets without slowing the job
Many Victorian councils require a minimum 70% diversion rate (by weight) for projects needing a waste management plan, and inner-Melbourne councils sometimes ask for more. You don't need a recycling expert on site to hit that — you need three things: enough bin positions for your main streams, clear signage, and a crew that knows concrete and metal never go in the general bin. Keep weighbridge dockets from your recycler; they're the proof of diversion councils and clients increasingly ask for, and they're also how you verify you're actually being charged correctly.
If you run multiple sites or pay different prices across builders and suburbs, that's exactly where an independent broker earns its keep. We benchmark a network of providers and renegotiate on a no-win, no-fee basis — see how the Melbourne waste broker model works or tell us about your sites and we'll show you where your C&D spend is leaking.
Frequently asked questions
What is the recycling rate for construction and demolition waste in Australia?
Does mixed C&D waste attract the full landfill levy in Victoria?
Should I use a skip bin or a hook-lift bin for construction waste?
Which construction materials are worth separating for recycling?
How do I prove I hit my project's waste diversion target?
Can recycled concrete actually be reused, or is it just diverted?
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