The following properties are protected by preservation easements held by Nantucket Preservation Trust:
| First Congregational Church | 62 Centre Street |
| Quaker Meeting House | 7 Fair Street |
| George G. Folger House (pending) | 23 Fair Street |
| Fire House Cart House | 8 Gardner Street |
| Greater Light | 8 Howard Street |
| The Nantucket Atheneum | 1 India Street |
| Hospital Thrift Shop | 17 India Street |
| Mitchell-Beinecke House | 69 Main Street |
| Jabez Bunker/Prince Gardner House | 85 Main Street |
| Captain Thaddeaus Coffin House | 89 Main Street |
| Hadwen-Wright House | 94 Main Street |
| Thomas Starbuck House | 11 Milk Street |
| 1800 House | 4 Mill Street |
| Rescom Palmer House | 9 New Mill Street |
| Mitchell-Andrews Fish House (pending) | 4 Old North Wharf |
| Antone Sylvia Grocery Store | 79 Orange Street |
| George Gardner House | 8 Pine Street |
| David Swain 2nd House (pending) | 43 Pine Street |
| Nathaniel Hussey House | 5 Quince Street |
| Captain Peleg Bunker House | 4 Traders Lane |
| John R. Nicholson House | 55 Union Street |
| Maria Mitchell Birthplace | 1 Vestal Street |
| Maria Mitchell Library | Vestal Street |
| American Legion Hall | 21 Washington Street |
| Admiral Sir Isaac Coffin Lancasterian School | 4 Winter Street |
| Boston-Higginbotham House | 27 York Street |
| Sea View Farm (Nantucket Island School of Design & the Arts) | 23 Wauwinet Road |
| Former Star of the Sea Youth Hostel | 31 Western Avenue |