In Greece, do the documents needed for a real estate transaction need to be certified with an apostille?

In Greece, if the documents needed for a real estate transaction come from a country that is a signatory to the Hague Convention, such documents must be endorsed with an apostille certificate to be considered legal. In the case of Poland, documents such as marriage certificates, birth certificates, powers of attorney or court documents needed for a real estate transaction in Greece must be certified with an apostille.