| 1 | Fydell House and Wall and Railings and 2 UrnsPE21 6HT | Grade I |
| 2 | Guildhall and Attached GatePE21 6HP | Grade I |
| 3 | Maud Foster Windmill and GranaryPE21 9EG | Grade I |
| 4 | Parish Church of St BotolphPE21 6NQ | Grade I |
| 5 | 10 South Street, BostonPE21 6HE | Grade II* |
| 6 | 116, High StreetPE21 8TG | Grade II* |
| 7 | 118b, 120 and 122 High StreetPE21 8TH | Grade II* |
| 8 | 124-136, High StreetPE21 8TN | Grade II* |
| 9 | 5, South SquarePE21 6JU | Grade II* |
| 10 | Blackfriars Arts CentrePE21 6DX | Grade II* |
| 11 | Boston Defined Area Survey; 3, 5, 7 and 9 Spain LanePE21 6HP | Grade II* |
| 12 | Boston Sessions HousePE21 6DY | Grade II* |
| 13 | Centenary Methodist Church and Attached Church HallPE21 6NY | Grade II* |
| 14 | Exchange Buildings, 36-39 Market PlacePE21 6NH | Grade II* |
| 15 | Freemasons' HallPE21 6QT | Grade II* |
| 16 | Shodfriars HallPE21 6HE | Grade II* |
| 17 | The Assembly RoomsPE21 6NN | Grade II* |
| 18 | 107, High StreetPE21 8TG | Grade II |
| 19 | 109, High StreetPE21 8TG | Grade II |
| 20 | 10 and 12, Church StreetPE21 6NW | Grade II |
| 21 | 10, London RoadPE21 8AG | Grade II |
| 22 | 10, WormgatePE21 6NP | Grade II |
| 23 | 110, High StreetPE21 8TR | Grade II |
| 24 | 11, 11a and 12, Witham PlacePE21 6LG | Grade II |
| 25 | 1-12, Spain CourtPE21 6HS | Grade II |
| 26 | 114, High StreetPE21 8TG | Grade II |
| 27 | 117a, High StreetPE21 8TJ | Grade II |
| 28 | 119-125, High StreetPE21 8TJ | Grade II |
| 29 | 11, Wide BargatePE21 6QY | Grade II |
| 30 | 12-18, WormgatePE21 6NP | Grade II |
| 31 | 12 and 14, Main RidgePE21 6QQ | Grade II |
| 32 | 1, 2 and 3, Witham PlacePE21 6NS | Grade II |
| 33 | 12, London RoadPE21 8AG | Grade II |
| 34 | 13, High StreetPE21 8QG | Grade II |
| 35 | 13, Pen StreetPE21 6TJ | Grade II |
| 36 | 13, Witham BankPE21 9JU | Grade II |
| 37 | 13, Witham PlacePE21 6LG | Grade II |
| 38 | 14, 15 and 16, Horncastle RoadPE21 9BX | Grade II |
| 39 | 14 and 16, South StreetPE21 6HY | Grade II |
| 40 | 14, Church StreetPE21 6NW | Grade II |
| 41 | 14, Wide BargatePE21 6RH | Grade II |
| 42 | 14, Witham PlacePE21 6LG | Grade II |
| 43 | 14, Witham StreetPE21 6PU | Grade II |
| 44 | 15 and 17, Pen StreetPE21 6TJ | Grade II |
| 45 | 15 and 17, WormgatePE21 6NT | Grade II |
| 46 | 15, High StreetPE21 8QG | Grade II |
| 47 | 15, Market PlacePE21 6EN | Grade II |
| 48 | 16a, 18 and 20, High StreetPE21 8SH | Grade II |
| 49 | 16, Market PlacePE21 6EN | Grade II |
| 50 | 16, Pen StreetPE21 6TJ | Grade II |