: This is the most critical survival and habitability factor. An island without a natural spring or "freshwater lens" will require expensive desalination systems or rainwater collection.
: Many uninhabited islands are protected nature reserves . Check if you are legally allowed to build a permanent residence or if the land must remain untouched. 3. Costs Beyond the Purchase Price buy a desert island
: You are buying property within a country’s territory, not a new nation. You must comply with that country's laws regarding taxes, environmental protection, and foreign ownership. : This is the most critical survival and habitability factor