Sell your surplus construction materials via Greyn
Turn leftover materials, returns and warehouse surplus into extra revenue. List your offer in minutes and reach professional buyers in the construction sector.
Too many usable materials are left unused
Every year, large quantities of usable materials remain unused in the construction sector: project surpluses, returns, slow-moving stock or materials from demolition projects. Often there is no professional channel to resell those materials.
Greyn solves this with a B2B marketplace for surplus and reusable construction materials.
Why sellers choose Greyn
Extra revenue from existing stock
Sell materials that would otherwise sit in the warehouse or on site.
Lower waste costs
Avoid costs for storage, removal or processing of usable materials.
Professional B2B buyers
Reach contractors, traders and construction companies through one professional channel.
Quickly online thanks to AI
With AI-powered listing tools, create a listing in minutes instead of hours.
Greyn works for the entire construction chain
Contractors & construction companies
Sell project surpluses and extract extra value from materials that would otherwise remain unused.
Traders & suppliers
Turn slow-moving stock, returns and warehouse surplus into revenue via a professional B2B channel.
Demolition & reuse
Bring reusable materials from demolition or renovation projects to the attention of professional buyers faster.
Public projects
Valorise materials from public works and support circular objectives.
From surplus to revenue in 3 steps
List your material
Take a photo, add specs and publish. With AI support, a listing takes just a few minutes.
Reach professional buyers
Buyers search and filter by material type, location and availability. Your offer becomes visible to relevant businesses.
Trade safely
Communicate with the buyer, make arrangements and handle the transaction professionally via Greyn.
Faster listings thanks to AI
From hours of admin to just minutes per listing.
A professional B2B channel
Verified businesses
Only professional businesses can trade on Greyn.
Transparent listings
Clear material information, photos and specs.
Professional handling
B2B trade with invoicing and clear documentation.
Support
The Greyn team helps with questions or issues.
Frequently asked questions
Ready to turn your surplus into revenue?
Create an account and place your first listing on Greyn.