The decision to have the property that you are buying in Costa Rica in your own personal name or in the name of a corporation is strictly up to the investor.
To put it in the name of a corporation is very common and easy; it can offer benefits of asset protection and anonymity for the actual owner. A valid passport for three representatives (president, vice president, and treasurer-all can be foreigners) is the only requirement for a foreigner to form a corporation in Costa Rica; the cost is between US$600 -1500.