Guides
What the Belgian public registers say about a construction firm, where to consult them, and what they do not prove.
Neutral explanations, written from the official sources. No contractor is named here, and no company is recommended.
Checking a contractor before you sign
The four public, free checks worth making before you hand a job to a Belgian company: existence, VAT, insolvency, registered activity.
Updated on 12 Aug 2026
An invalid VAT number: what it means, and what it does not
Why VIES answers "invalid" for a Belgian VAT number, the possible causes, and what it changes on the invoice for a job.
Updated on 12 Aug 2026
Insolvency: what it changes for your project and your deposit
Bankruptcy and judicial reorganisation in Belgium: where they are published, what they mean for a contract under way, and what becomes of a deposit.
Updated on 12 Aug 2026
Contractor recognition (agréation), and when it is required
What the Belgian recognition (agréation) of contractors is, what its categories and classes mean, and why it does not apply to a private job.
Updated on 12 Aug 2026
VCA explained
What VCA (LSC) certifies in Belgium, the difference between VCA*, VCA** and VCA Petrochemicals, and what the certificate does not cover.
Updated on 12 Aug 2026
Reading a Crossroads Bank for Enterprises extract
How to read a KBO/BCE extract: enterprise number, legal form, status, legal situation, establishment units and NACE codes.
Updated on 12 Aug 2026