Buying and selling surplus, made straightforward.
Whether you're clearing idle stock or sourcing materials for less, here's exactly how Concrix works — and how we keep listings honest.
How to Buy
Source quality surplus near you, sold by the lot, in four simple steps.
Find materials
Search by category, condition, price and distance. Each listing shows quantity, location and a Condition Report so you know what you're getting before you drive out.
Send an enquiry
Found a match? Enquire directly through Concrix — it's free. Your message goes straight to the seller; no middleman markup on the deal.
Agree the deal
Confirm quantity, price and collection details with the seller. Ask for extra photos or specifics if you need them before committing.
Collect or deliver
Pick up from the seller's site or arrange your own delivery. Because most stock is nearby, collection is usually a short trip.
How to Sell
Turn idle site materials into cash — list free during launch.
List your stock
Add photos, quantity and condition in a few minutes. Set a price for the lot, or invite offers if you'd rather negotiate. Listing is free during launch.
Get verified
We review each listing alongside you before it goes live — counting quantities and checking the condition notes are clear and honest.
Receive enquiries
Once live, buyers near you can find and enquire on your listing through Concrix. You get the message directly and reply on your terms.
Close the deal
Agree the deal, arrange collection, and recover cost from stock that was otherwise sitting idle. Mark it sold when it's gone.
The Condition Report
Before a listing goes live, we review it against a consistent checklist so you can act on it with confidence — not guesswork.
Condition Report
What we check before it goes live
6/6
Quantity counted
We confirm the count matches the listing so the lot is what's described.
Photos provided
Clear, recent photos of the actual stock — not stock imagery.
Welds & joints
Structural points checked for splits, fatigue or poor repairs.
Straightness
Frames and lengths checked for bends that affect reuse.
Rust / corrosion
Surface wear noted honestly so there are no surprises on site.
Seller identity
We verify who's selling before the listing goes public.
Normal wear is expected on surplus materials. Noted points highlight anything that affects condition or count — Concrix reviews listings but does not warrant items; always confirm details with the seller.
How we keep listings trustworthy
We can't be on every site, so we focus on what makes a listing safe to act on: honest descriptions, reviewed before they go live, and a clear record of who's selling.
Quick answers
Does it cost anything to list? +
Listing is free during launch. Enquiring on a listing is always free.
What does “verified” mean? +
We review listings before they go live and check the condition is described honestly. We don't warrant or guarantee items.
Who arranges collection? +
The buyer and seller agree it directly — pickup from site or your own delivery. We don't handle logistics in v1.
More questions? See the full FAQ.
Ready to buy or sell?
Browse verified surplus near you, or list your idle stock free during launch.