That is very difficult. You have to stay in Greece for seven years in a permanent basis and to be able to prove it with documents, utility bills, etc. You should also be able to pass the interview trial, i.e., the test examination.
How can I obtain Greek citizenship as a Golden Visa holder?
I recently bought property in Greece and have obtained Golden Visas for my family of four. We love it here and want to settle permanently. I also want to work here eventually. How do we convert our visas into citizenship? How long does the process take?
Regarding the acquisition of Greek citizenship, please be advised about the related provisions of the law in force. For the foreigner who wishes to acquire Greek citizenship by naturalization, he or she is required to: be an adult at the time of the application for naturalization; be able to prove seven years of permanent and legal residency in Greece; not be convicted of sentences for more than six months, for certain types of crimes, or for more than one year for crimes that have been committed intentionally; keep a permanent residency permit of the types that are recognized by the law. On occasion of this communication, I would like to inform that, according to a recent legal amendment, the permanent residency permit of a landlord or a permanent investor residency permit, as yours, were included as final titles and acceptable for naturalization of foreigners. So you could proceed to the related procedure after seven years under the related terms and conditions above.