What are the Main Issues of the Purchase Procedure of a Property in Italy?

It is not easy to give an accurate estimate of the purchase procedure issues, steps and timelines.
This depends on the completion of the process factors, such as the type of property,  if there are any problems with the property, the need of obtaining financing and more.

In principle, the main issues relating to buying a property in Italy are:

The Exchange of Contracts (Purchase Offer/Proposta d’acquisto, Preliminary Agreement/Compromesso)
The Prior to Completion (Tax arrangement, Renovation license and projects)
The Completion (Rogito Notarile)
The Ownership and Costs Issues