| Address | Property Name | Parcel ID |
| 14 High Street, Guilford , CT | n/a | 33075 |
| 17 High Street, Guilford , CT | Elisha Hart House | 33073 |
| 23 High Street, Guilford , CT | Edwin Flook House | 33072 |
| 24 High Street, Guilford , CT | Hand-Clark House | 33076 |
| 27 High Street, Guilford , CT | Andrew Jackson House | 33071 |
| 28 High Street, Guilford , CT | Wilcox-Fowler House | 33077 |
| 31 High Street, Guilford , CT | Edmund Jillson House | 33070 |
| 36 High Street, Guilford , CT | n/a | 33078 |
| 37 High Street, Guilford , CT | n/a | 33069 |
| 40 High Street, Guilford , CT | n/a | 33079 |
| 43 High Street, Guilford , CT | n/a | 33068 |
| 46 High Street, Guilford , CT | n/a | 33080 |
| 47 High Street, Guilford , CT | Dennis Dailey House | 33067 |
| 50 High Street, Guilford , CT | n/a | 33081 |
| 51 High Street, Guilford , CT | Henry A. Stannard House | 32059 |
| 58 High Street, Guilford , CT | Norton-Parmelee House | 33066 |
| 63 High Street, Guilford , CT | n/a | 32058 |
| 66 High Street, Guilford , CT | Guilford Enterprise Co. | 32060 |
| 108 Lovers Lane, Guilford , CT | Joseph Weld House | 41032 |
| _ Lovers Lane, Guilford , CT | Guilford Fairgrounds | 40138 |
| 259 Old Whitfield Street, Guilford , CT | Colonel William Hart House | 33029 |
| 265 Old Whitfield Street, Guilford , CT | n/a | 33028 |
| 268 Old Whitfield Street, Guilford , CT | Governor Rollin S. Woodruff House | _ |
| 279 Old Whitfield Street, Guilford , CT | H.R. Landon House | 33027 |
| 288 Old Whitfield Street, Guilford , CT | n/a | 330151 |
| 296 Old Whitfield Street, Guilford , CT | Hiram Martin House | 33016 |
| 55 South Fair Street, Guilford , CT | n/a | 32062 |
| 15 South Fair Street, Guilford , CT | n/a | 32070 |
| 21 South Fair Street, Guilford , CT | n/a | 32069 |
| 22 South Fair Street, Guilford , CT | George Bradley House | 32052 |
| 27 South Fair Street, Guilford , CT | n/a | 32068 |
| 28 South Fair Street, Guilford , CT | Adolph Sommers House | 32053 |
| 29 South Fair Street, Guilford , CT | n/a | 32067 |
| 34 South Fair Street, Guilford , CT | n/a | 32054 |
| 38 South Fair Street, Guilford , CT | Joseph E. Wyatte House | 32055 |
| 39 South Fair Street, Guilford , CT | n/a | 32066 |
| 43 South Fair Street, Guilford , CT | Franklin Spencer House | 32065 |
| 44 South Fair Street, Guilford , CT | Ernest Hermann House | 32056 |
| 49 South Fair Street, Guilford , CT | Francis McManus House | 32063 |
| 52 South Fair Street, Guilford , CT | n/a | 32057 |
| 127 Whitefield Street, Guilford , CT | n/a | 33099 |
| 128 Whitefield Street, Guilford , CT | Charles E. Thompson House | 33003 |
| 133 Whitefield Street, Guilford , CT | n/a | 33098 |
| 138 Whitefield Street, Guilford , CT | Richard Weld House | 33004 |
| 142 Whitefield Street, Guilford , CT | Leverett Parmelee House | 33005 |
| 143 Whitefield Street, Guilford , CT | n/a | 33097 |
| 148 Whitefield Street, Guilford , CT | n/a | 33006 |
| 151 Whitefield Street, Guilford , CT | Ezra Pendleton House | 33096 |
| 158 Whitefield Street, Guilford , CT | Charles W. Miller House | 33007 |
| 161 Whitefield Street, Guilford , CT | St. George's Roman Catholic Church, Masonic Hall | 33095 |