The notarial certificate is one of the most important documents in real estate transactions. It is the document that proves that the transaction took place and that all of the parties involved are who they say they are. The venue where the notarial certificate is signed is just as important as the document itself. The venue should be a public place where there is a notary present. The notary should witness & notarized the signatures of all of the parties involved in the transaction. The notarial certificate is an important part of any real estate transaction. Make sure you choose a reputable venue for signing it.