Privacy policy.

How we collect, use and protect your personal data, in accordance with the General Data Protection Regulation (GDPR).

Group Sigma is committed to protecting the privacy of visitors to this website. This policy explains what personal data we collect, why, and the rights you have over it.

Data controller

The data controller is Group Sigma Architecture SRL, La Maison Blanche du Lac, Avenue Normande 19, 1332 Genval, Belgium.
Company number (BCE/KBO): BE 0877.475.262
For any data protection request: contact@groupsigma.be.

Data we collect

This website does not use analytics, advertising or tracking tools. We only process personal data that you actively provide to us:

  • Contact data — when you email us or use a contact link: your name, email address, phone number and any information contained in your message.
  • Project enquiry data — any project context you choose to share (location, scope, stage, etc.).

Why we use your data

We process your data solely to:

  • respond to your enquiries and requests;
  • assess and follow up on potential project collaborations;
  • maintain our professional correspondence.

Legal basis

The processing is based on your consent (when you contact us voluntarily) and on our legitimate interest in responding to enquiries and managing our business relationships, in accordance with Article 6 of the GDPR.

Data retention

We keep your data only as long as necessary to handle your request and, where relevant, for the duration of our business relationship plus the legal retention periods applicable in Belgium. After that, your data is deleted or anonymised.

Data sharing

Your personal data is not sold or rented. It may be shared only with OVH SAS (hosting and email infrastructure), acting as a processor on our behalf, and only where strictly necessary. Data is processed within the European Union.

Your rights

Under the GDPR, you have the right to:

  • access the personal data we hold about you;
  • request correction of inaccurate data;
  • request erasure of your data;
  • object to or restrict the processing;
  • request portability of your data;
  • withdraw your consent at any time.

To exercise these rights, contact us at contact@groupsigma.be. You also have the right to lodge a complaint with the Belgian Data Protection Authority (Autorité de protection des données / Gegevensbeschermingsautoriteit), www.dataprotectionauthority.be.

Data security

Group Sigma implements appropriate technical and organisational measures to protect your personal data against loss, misuse and unauthorised access.

Updates

This privacy policy may be updated to reflect changes in our practices or in the law. The date below indicates the latest revision.

Last updated: 18 May 2026