| Address | Property Name | Parcel ID |
| 79 Orchard Road, East Haddam, CT | Dr. Thomas Moseley House | M47/L005 |
| 80 Orchard Road, East Haddam, CT | Darius Gates House | M47/L004 |
| 90 Orchard Road, East Haddam, CT | n/a | M47/L003 |
| 472 Town Street, East Haddam, CT | Jonathan Booge House | M37/L046 |
| 478 Town Street, East Haddam, CT | William Spencer House | M37/L045 |
| 479 Town Street, East Haddam, CT | Frederick Spencer House | M37/L013 |
| 482 Town Street, East Haddam, CT | Rev. Issac Parsons House | M37/L044 |
| 488 Town Street, East Haddam, CT | East Haddam Grange Hall | M47/L112 |
| 492 Town Street, East Haddam, CT | East Haddam Town Hall | M47/L111 |
| 496 Town Street, East Haddam, CT | Samuel Emmons House | M47/L110 |
| 499 Town Street, East Haddam, CT | First Church of Christ | M47/L002 |
| 502 Town Street, East Haddam, CT | Francis Mason Palmer House | M47/L109 |