Must the seller provide a soil pollution report?

Yes. In Wallonia the seller must give the buyer a certified extract of the soil state database (BDES) before the sale. It costs 30 euros for the first parcel and is required under the Walloon soil decree of 1 March 2018 (wallonie.be, 2026).

Since the Walloon soil decree, transferring real property triggers a duty to inform the buyer about the state of the soil. The seller must obtain and hand over a certified extract of the Banque de Donnees de l’Etat des Sols (BDES), the regional database that records, parcel by parcel, any known pollution, past industrial activity or remediation history (wallonie.be, 2026).

The extract is requested online from the BDES portal after authentication. Pricing is tiered: 30 euros for the first parcel, then 10 euros for each additional parcel, capped at 320 euros in total, with 100 euros added for a non-registered parcel and 10 euros for delivery by registered post (wallonie.be, 2026). For a notarised sale the certified extract is valid for one year from issue, and it lapses if the database is updated in the meantime.

The legal foundation is the Decret du 1er mars 2018 relatif a la gestion et a l’assainissement des sols, with its implementing order of 6 December 2018 (wallonie.be, 2026).

The reassuring counter-intuitive point: most Walloon parcels carry no pollution record, so the extract usually comes back clean and simply confirms there is nothing to declare. But when a plot appears in the inventory, the buyer, their bank and their notary will all want to see the extract early, because it can trigger investigation or remediation obligations that reshape the deal. Easyhome orders it up front so there are no surprises.

At a glance