Costs · 4 min read · Updated 6 November 2026
Sorting rubble, soil and mixed waste: how separating loads cuts costs
Why sorting matters so much
Waste disposal sites price loads by what is in them. Clean inert waste can be crushed into recycled aggregate or used for site restoration, so it is cheap to accept. Mixed waste has to be picked through, and much of what is left is charged at the standard rate of landfill tax. A handful of timber offcuts and some plastic wrap in a pile of brick can be enough to push it into the mixed category.
How waste is usually grouped
| Group | Examples | Typical cost to remove |
|---|---|---|
| Clean inert rubble | Brick, block, concrete, stone, tiles, slabs | Lowest |
| Clean soil | Topsoil, subsoil, clay, turf | Low, but heavy |
| Mixed building waste | Timber, packaging, fittings, rubble with other bits | Higher |
| Plasterboard and gypsum | Plasterboard, gypsum plaster | Separate handling |
| Hazardous waste | Asbestos, contaminated soil, some paints and chemicals | Specialist only |
Actual prices depend on the collector and the area, but this order is broadly consistent across the UK.
The difference between clean and mixed loads is easiest to see in the guide prices collectors typically charge. A one-tonne bulk bag of clean rubble or soil usually costs £70 to £150 to collect, while a van load of mixed building waste is usually £150 to £350, even though it often weighs less. Much of that difference comes from disposal charges and the labour of sorting at the transfer station.
- Clean rubble in a bulk bag: typically £70 to £150
- Small pile of bagged clean rubble: typically £80 to £180
- Mixed van load: typically £150 to £350
- Plasterboard and bulky fittings: sometimes priced on top
These are guide ranges only, and local prices vary. The pattern, though, is consistent: the cleaner the load, the cheaper each tonne is to remove.
A simple sorting set-up
- One bulk bag or area for clean brick, concrete and stone
- One for soil and turf, kept as clean of rubble as practical
- One for timber
- One for plasterboard offcuts, always on its own
- One for general rubbish and packaging
- A sealed spot away from everything else for anything suspect
Label the bags or areas clearly if more than one trade is working on site. It only takes one person throwing a bag of rubbish into the rubble to undo the effort.
Sorting also makes collection quicker. Bags of a single material can be loaded straight onto the vehicle, while a mixed heap may need picking through on site before anything can go, which adds labour time to the price.
Materials that must stay separate
Plasterboard and other gypsum products must not be landfilled with biodegradable waste, because the combination can produce hydrogen sulphide gas. Asbestos is hazardous waste and must be double wrapped, labelled and taken only to permitted sites. Japanese knotweed, and soil containing it, is controlled waste that needs specialist disposal. Keep any of these well away from your rubble pile.
If you are not sure whether something is hazardous, such as old roofing sheets, flue pipes, floor tiles or soil that smells of oil, keep it apart and ask before it goes anywhere. It is far cheaper to deal with a small separate pile than a whole contaminated load.
Reuse before removal
The cheapest tonne of rubble is the one you do not pay to remove. Clean broken brick and concrete may be suitable as hardcore under a new shed base, path or patio if it is crushed to a sensible size and compacted properly. Topsoil can often be used elsewhere in the garden. Ask your builder or landscaper whether any of it can stay.
Sorting on a building or landscaping site
On a multi-trade site, sorting only works if everyone knows the system. Put the containers where the waste is produced, not at the far end of the drive, and agree at the start who empties what. Landscapers usually produce mostly soil, turf and hardcore, so one or two clean bulk bags plus a small mixed bag is often enough. Interior renovations produce more mixed waste and plasterboard, so the clean rubble container fills more slowly.
| Project | Main waste | Sorting priority |
|---|---|---|
| Patio lift | Slabs, mortar, hardcore | Keep soil and roots out of the rubble |
| Garden levelling | Soil, turf, stones | Keep rubbish and timber out of the soil |
| Kitchen refit | Tiles, units, plasterboard | Plasterboard on its own |
| Knock-through | Brick, plaster, timber | Timber and lintels apart from brick |
Describing the load when you ask for a price
When you send photos for a quote, say what each pile is. A collector who knows they are taking two bulk bags of clean concrete and one bag of mixed waste can give a firm price. One who sees a single heap of unknown material has to allow for the worst case.
Frequently asked questions
Is soil cheaper to remove than rubble?
Clean soil is inert, so disposal is usually cheap, but it is heavy and bulks up when dug, so you often need more bags or trips than you expect. Soil mixed with rubble is usually fine, but soil with roots, rubbish or knotweed in it costs more. Clean topsoil is sometimes wanted by landscapers, which can lower the cost.
Can a small amount of timber go in with rubble?
A few small pieces are often tolerated, but it is best avoided. Disposal sites can reject or reclassify a load that contains too much non-inert material, and the collector may have to charge mixed waste rates. If you have a bag of timber offcuts, keep it separate and mention it when you ask for a price.
Do I need to sort waste if I hire a skip?
Skip firms generally sort mixed skips at their transfer station, but they price for it. Many offer cheaper rates for skips of clean rubble or soil only, and they will charge extra or refuse to collect if prohibited items such as plasterboard, asbestos or tyres are found. Ask about the clean rubble rate when you book.
waste sorting inert waste saving money landfill tax
