Startup discovery
Greyn.
A marketplace for surplus construction stock in Belgium
Commerce and marketplacesClimate and energy
What it does
Greyn connects businesses holding leftover building supplies with buyers looking for nearby materials. Sellers can photograph their stock to draft listings with AI, then check the details before publication. Buyers browse local offers by material type and availability. Businesses can also bring existing inventory into the platform from Excel or PDF files.
Usable stock remains idle when construction businesses cannot find local buyers.
- Stage
- Live
- Made for
- Construction firms, Building-material merchants, Businesses sourcing reusable supplies
- Platforms
- Web
- Company
- Greyn BV
- Website
- greyn.market ↗
- Links
- Blog
Timeline
- Greyn launches its construction materials marketplace
Greyn held its public launch in Lier on 8 September 2026.
First release · Took effect · Proposed by @Brewlys
Sources
Contributor credit
This profile adapts text by @Brewlys from profile PR #58, licensed under CC BY 4.0. Its factual claims were reviewed separately.
Publication record
- Release
sha256:1f9c48a54c26296e5b231c1859111146d36f332bb959402927632bb0466cdd55- Revision
sha256:1db2df16e673a8a3d6fa7de3085169861348ac3573595f4aa9a3ea7941976576
Every statement here carries its date and stays true as of that date.