| 1, Princes Avenue, Watford | Freehold | 42 m² | £224,950 (2014) |
| 3 Princes Avenue, Watford | Freehold | 61 m² | £430,000 (2024) |
| 5 Princes Avenue, Watford | Freehold | 88 m² | £425,000 (2024) |
| 7, Princes Avenue, Watford | - | 88 m² | - |
| 11 Princes Avenue, Watford | Freehold | 127 m² | £388,000 (2022) |
| 13, Princes Avenue, Watford | Freehold | 90 m² | £390,000 (2019) |
| 15, Princes Avenue, Watford | - | 108 m² | - |
| 19, Princes Avenue, Watford | - | 93 m² | - |
| 23, Princes Avenue, Watford | Freehold | 88 m² | £217,500 (2011) |
| 25, Princes Avenue, Watford | Freehold | 93 m² | £335,000 (2015) |
| 27, Princes Avenue, Watford | Freehold | 98 m² | £430,000 (2017) |
| 29 Princes Avenue, Watford | Freehold | 145 m² | £420,000 (2023) |
| 31, Princes Avenue, Watford | Freehold | 94 m² | £242,000 (2012) |
| 33 Princes Avenue, Watford | - | 97 m² | - |
| 37 Princes Avenue, Watford | - | 93 m² | - |
| 39, Princes Avenue, Watford | Freehold | 86 m² | £390,000 (2020) |
| 41 Princes Avenue, Watford | - | 85 m² | - |
| 49 Princes Avenue, Watford | - | 95 m² | - |
| 51, Princes Avenue, Watford | Freehold | 94 m² | £73,000 (1997) |
| 55 Princes Avenue, Watford, Watford | - | 93 m² | - |
| 57 Princes Avenue, Watford | - | 94 m² | - |
| 61, Princes Avenue, Watford | - | 86 m² | - |
| 63 Princes Avenue, Watford | Freehold | 92 m² | £404,000 (2018) |
| 65, Princes Avenue, Watford | Freehold | 92 m² | £400,000 (2018) |
| 69, Princes Avenue, Watford | - | 89 m² | - |
| 73 Princes Avenue, Watford | - | 95 m² | - |
| 75, Princes Avenue, Watford | - | 103 m² | - |
| 79, Princes Avenue, Watford | Freehold | 95 m² | £410,000 (2020) |
| 81 Princes Avenue, Watford | Freehold | 101 m² | £415,000 (2017) |
| 83 Princes Avenue, Watford | Freehold | 70 m² | £438,000 (2021) |
| 85 Princes Avenue, Watford | - | 115 m² | - |
| 87 Princes Avenue, Watford, Watford | - | 132 m² | - |
| 89 Princes Avenue, Watford | Freehold | 140 m² | £413,000 (2017) |
| 91 Princes Avenue, Watford | Freehold | 99 m² | £390,000 (2019) |
| 93, Princes Avenue, Watford | Freehold | 99 m² | £417,500 (2017) |
| 97, Princes Avenue, Watford | Freehold | 99 m² | £190,500 (2003) |
| 99 Princes Avenue, Watford | - | 104 m² | - |
