Buying property in Belgium

Buying property in Belgium

With whom must the parties (buyer/seller) formalise the initial agreement? Is a legal form imposed?

A legal form is not required. The Civil Code effectively stipulates that the sale is final between the parties as soon as the sold property is specified and the price is set, even if the said property has not be delivered or the price has not been paid (Article 1583 of the Belgian Civil Code)