Many islands are accessible only by boat or floatplane. You must consider natural anchorage for mooring and the potential for seasonal "lock-in" during freeze/thaw cycles.
The state's priciest listings, like the 44-acre Passage Island near Seldovia, can reach $20 million . How to Acquire Island Land buying an island in alaska
Most private islands are purchased through standard real estate marketplaces like Private Islands Online or LandSearch . However, the State of Alaska also offers direct land sale programs: Many islands are accessible only by boat or floatplane