Under Dutch law, a sales contract only becomes binding when both parties have agreed on the purchase price, all terms and conditions and the sales contract has been signed. Also known as the ‘in writing requirement’.
Before this happens, buyer and seller are free to waive the agreement without any obligations.
When the deed of transfer (notarial deed) is signed and the purchase price is paid, you are the owner of the property. Ownership is then transferred from seller to buyer. From then on, you are the legal owner of the property.