A private 65-acre island in Maine is once again up for sale, with a price tag of $8 million. Known as Sheepshead Island, it has a unique feature: you can drive right up to it when the tide is out.

These five homes in Maine show how living spaces under 400 square feet can still deliver a sense of comfort. Each one measures about the size of a two-car garage, painting a picture of minimalism that continues to draw interest in lifestyle choices.