The best option is to do live stream viewings form home. There are two ways to proceed with the investment and make a purchase if you really liked the property: You authorize a third party in Portugal (e.g. golden visa lawyer) with a power of attorney to obtain a property in your name. This power of attorney can also be granted from your home country and should be arranged in advance. You reserve the property by making a small down payment online and a) come to Portugal later yourself or b) provide a power of attorney to a third party in Portugal.