Belgium does not restrict foreigners from buying property. The biggest variable is not nationality but region — Flanders, Brussels and Wallonia each set their own purchase taxes.
Compromis then notarial deed
A binding preliminary contract (compromis de vente / verkoopovereenkomst) is usually signed first, followed within about four months by the notarial deed (acte authentique) that transfers ownership.
Registration duties vary by region
The main cost is registration duty. Flanders applies a reduced rate for a buyer’s sole, owner-occupied home (single-digit %), with a higher standard rate otherwise; Brussels and Wallonia traditionally apply around 12.5%, softened by abatements for modest or primary homes. The exact figure depends on the region and your situation.
The notary’s role
The notary checks title, mortgages and town-planning information, and registers the deed. Notary fees are tariff-based.
For foreign buyers
Region, language (Dutch, French or German) and the abatement rules make local input valuable. A verified Belgian colleague can confirm the regional duty, review the compromis, and coordinate with the notary.
Regional rates and abatements change — confirm with admitted Belgian counsel.