Where Your Demolished House Actually Ends Up

A demolished house is not one waste stream. It is five or six, and what a contractor does with them in the first hour on site decides both the environmental outcome and a large slice of the disposal bill.

The streams

**Concrete, brick and masonry.** The heaviest component by a wide margin, and the easiest to recycle. Crushed and screened, it comes back as road base, drainage aggregate and fill. A clean load of masonry is comparatively cheap to dispose of because it has value at the other end.

**Steel.** Roof sheeting, structural members, reinforcement, pipes, hot water services, the lot. It goes to a scrap merchant, gets remelted, and is genuinely worth money.

**Clean timber.** Structural framing, flooring and joinery. Where it is clean and worth separating, it can be reused or processed. Painted, treated or contaminated timber is a different and more expensive stream.

**Mixed waste.** Everything that cannot be sorted economically. This is the expensive one, and the more of it a job generates, the more the disposal costs.

**Asbestos and contaminated material.** Wrapped, tracked and disposed at an EPA-authorised facility under a documented chain. Not negotiable, and priced accordingly.

**Salvage.** Not waste at all. Original hardwood flooring, solid doors, cast-iron lacework, chimney pots, slate, leadlight, bricks worth cleaning. On the right house it is worth setting aside.

Why sorting on site matters commercially

A mixed skip is billed at the highest applicable rate for everything in it. Separated streams are each billed at their own rate, and the masonry — which is most of the weight — attracts the lowest.

So sorting is not an environmental gesture bolted onto the job. It is the reason a properly run demolition can be competitively priced. The contractor who mixes everything into one stream is paying more for disposal and has to recover it somewhere.

What the paperwork should show you

At completion you should receive disposal documentation. For general waste that means weighbridge dockets showing where the material went. For asbestos it means the tracked disposal record from the receiving facility.

Keep those. If the property is ever sold, insured, or the subject of a question about what was on it, that paperwork is the answer.

The signal in a very cheap quote

Disposal is a real cost that cannot be negotiated away. If a demolition quote is materially cheaper than the others and the scope looks similar, the difference is usually one of three things: asbestos excluded, below-ground works excluded, or disposal assumed clean when it will not be.

Ask which. A contractor doing it properly will tell you plainly.

Salvage worth mentioning

If your house has original hardwood floors, solid timber doors, period lacework or good bricks, say so before the job starts. Once a machine is in the building, the decision has been made for you. Setting material aside costs time, so it needs to be in the plan rather than requested on the day.