| 217 Knella Road, Welwyn Garden City | - | 91 m² | - |
| 219 Knella Road, Welwyn Garden City | Freehold | 92 m² | £438,500 (2023) |
| 221, Knella Road, Welwyn Garden City | - | 91 m² | - |
| 223 Knella Road, Welwyn Garden City | - | 68 m² | - |
| 225 Knella Road, Welwyn Garden City | - | 87 m² | - |
| 227 Knella Road, Welwyn Garden City | - | 87 m² | - |
| 229, Knella Road, Welwyn Garden City | - | 68 m² | - |
| 231 Knella Road, Welwyn Garden City | - | 91 m² | - |
| 233 Knella Road, Welwyn Garden City | - | 85 m² | - |
| 235 Knella Road, Welwyn Garden City | - | 80 m² | - |
| 239 Knella Road, Welwyn Garden City | Freehold | 91 m² | £365,000 (2022) |
| 243, Knella Road, Welwyn Garden City | Freehold | 86 m² | £193,000 (2011) |
| 245, Knella Road, Welwyn Garden City | Freehold | 88 m² | £265,000 (2014) |
| 247 Knella Road, Welwyn Garden City | - | 96 m² | - |
| 249, Knella Road, Welwyn Garden City | - | 90 m² | - |
| 251 Knella Road, Welwyn Garden City | - | 60 m² | - |
| 257, Knella Road, Welwyn Garden City | Freehold | 75 m² | £320,000 (2016) |
| 259 Knella Road, Welwyn Garden City | - | 79 m² | - |
| 265 Knella Road, Welwyn Garden City | Freehold | 68 m² | £380,000 (2022) |
| 265A Knella Road, Welwyn Garden City | Freehold | 86 m² | £445,000 (2023) |
| 269 Knella Road, Welwyn Garden City | Freehold | 97 m² | £350,000 (2025) |
| 271, Knella Road, Welwyn Garden City | Freehold | 89 m² | £190,000 (2009) |
| 273 Knella Road, Welwyn Garden City | Freehold | 75 m² | £382,500 (2025) |
| 275 Knella Road, Welwyn Garden City | - | 87 m² | - |
| 277 Knella Road, Welwyn Garden City | Freehold | 70 m² | £295,000 (2015) |
| 279 Knella Road, Welwyn Garden City | - | 80 m² | - |
| 283 Knella Road, Welwyn Garden City | - | 85 m² | - |
| 285 Knella Road, Welwyn Garden City | - | 80 m² | - |
| 287, Knella Road, Welwyn Garden City | Leasehold | 137 m² | £650,000 (2022) |
| 289, Knella Road, Welwyn Garden City | - | 110 m² | - |
