| 19, Cowper Crescent, Hertford | Freehold | 41 m² | £500,000 (2017) |
| 21, Cowper Crescent, Hertford | Freehold | 117 m² | £655,000 (2017) |
| 22, Cowper Crescent, Hertford | Freehold | 87 m² | £338,000 (2012) |
| 23, Cowper Crescent, Hertford | Freehold | 102 m² | £325,000 (2009) |
| 25, Cowper Crescent, Hertford | Freehold | 106 m² | £738,000 (2023) |
| 27 Cowper Crescent, Hertford | Freehold | 101 m² | £590,000 (2024) |
| 31, Cowper Crescent, Hertford | - | 132 m² | - |
| 32, Cowper Crescent, Hertford | Freehold | 93 m² | £320,000 (2009) |
| 33 Cowper Crescent, Hertford, Hertford | Freehold | 111 m² | £585,000 (2021) |
| 36 Cowper Crescent, Hertford | Freehold | 101 m² | £696,250 (2025) |
| 37, Cowper Crescent, Hertford | Freehold | 108 m² | £750,000 (2021) |
| 38, Cowper Crescent, Hertford | Freehold | 89 m² | £530,000 (2016) |
| 39 Cowper Crescent, Hertford | Freehold | 117 m² | £640,000 (2025) |
| 40 Cowper Crescent, Hertford | Freehold | 135 m² | £725,000 (2024) |
| 43, Cowper Crescent, Hertford | Freehold | 97 m² | £485,000 (2018) |
| 44, Cowper Crescent, Hertford | Freehold | 136 m² | £930,000 (2024) |
| 45, Cowper Crescent, Hertford | Freehold | 99 m² | £420,000 (2015) |
| 46, Cowper Crescent, Hertford | Freehold | 97 m² | £580,000 (2018) |
| 47 Cowper Crescent, Hertford | Freehold | 114 m² | £570,000 (2023) |
| 49 Cowper Crescent, Hertford | - | 200 m² | - |
| 52, Cowper Crescent, Hertford | Freehold | 134 m² | £325,000 (2009) |