11 & 15 Cathcart Road

Nantucket, Mass.
Listing price: $38.5 million

This waterfront house with an in-ground pool was built on 5.75 acres and provides views of the harbor. Three main structures are spread across the property—the primary house, garage, and guest house—with a total of nine bedrooms, 10 full baths, and three half-baths. The two-story guest house has three bedrooms and is fully equipped. Even the suite above the garage has two beds, two baths kitchen, dining room, and living room.