| 2, Princes Avenue, Watford | Freehold | 87 m² | £186,000 (2005) |
| 4, Princes Avenue, Watford | Freehold | 85 m² | £247,500 (2014) |
| 6 Princes Avenue, Watford | Freehold | 91 m² | £175,000 (2004) |
| 10 Princes Avenue, Watford | - | 117 m² | - |
| 14 Princes Avenue, Watford | Freehold | 88 m² | £137,000 (2001) |
| 20, Princes Avenue, Watford | - | 81 m² | - |
| 22, Princes Avenue, Watford | Freehold | 92 m² | £390,000 (2018) |
| 24, Princes Avenue, Watford | Freehold | 111 m² | £233,000 (2007) |
| 26, Princes Avenue, Watford | Freehold | 113 m² | £232,500 (2007) |
| 28 Princes Avenue, Watford | Freehold | 115 m² | £443,333 (2022) |
| 30, Princes Avenue, Watford | Freehold | 126 m² | £285,000 (2011) |
| 36, Princes Avenue, Watford | Freehold | 114 m² | £523,500 (2024) |
| 38 Princes Avenue, Watford | Freehold | 115 m² | £460,000 (2023) |
| 42 Princes Avenue, Watford | - | 133 m² | - |
| 46, Princes Avenue, Watford | Freehold | 104 m² | £230,000 (2009) |
| 50 Princes Avenue, Watford | - | 94 m² | - |
| 54 Princes Avenue, Watford | Freehold | 183 m² | £131,000 (2001) |
| 56, Princes Avenue, Watford | Freehold | 132 m² | £435,000 (2018) |
| 60, Princes Avenue, Watford | Freehold | 86 m² | £176,000 (2011) |
| 62, Princes Avenue, Watford | Freehold | 82 m² | £177,000 (2011) |
| 66 Princes Avenue, Watford, Watford | Freehold | 104 m² | £278,000 (2008) |
| 70, Princes Avenue, Watford | Freehold | 97 m² | £82,000 (1998) |
| 72, Princes Avenue, Watford | Freehold | 83 m² | £93,000 (1999) |
| 76 Princes Avenue, Watford | Freehold | 86 m² | £310,000 (2014) |
| 82, Princes Avenue, Watford | Freehold | 92 m² | £82,000 (1998) |
| 84 Princes Avenue, Watford, Watford | Freehold | 84 m² | £195,000 (2006) |
| 86, Princes Avenue, Watford | Freehold | 84 m² | £375,000 (2018) |
| 88, Princes Avenue, Watford | Freehold | 85 m² | £575,000 (2021) |
| 90 Princes Avenue, Watford | Freehold | 87 m² | £125,000 (2001) |
| 94 Princes Avenue, Watford | Freehold | 88 m² | £196,000 (2006) |
| 98 Princes Avenue, Watford | - | 79 m² | - |
| 100 Princes Avenue, Watford, Watford | Freehold | 91 m² | £365,000 (2021) |
| 102, Princes Avenue, Watford | Freehold | 94 m² | £152,000 (2001) |
| Flat 1, 2A Princes Avenue, Watford | - | 55 m² | - |
| Flat 1, 16 Princes Avenue, Watford | - | 51 m² | - |
| Flat 1, 24 Princes Avenue, Watford | - | 48 m² | - |
| Flat 2, 2A Princes Avenue, Watford | - | 66 m² | - |
| Flat 2, 16 Princes Avenue, Watford | - | 43 m² | - |
| Flat 2, 24 Princes Avenue, Watford | - | 71 m² | - |
| Flat 3, 2A Princes Avenue, Watford | - | 62 m² | - |
| Flat 3, 16 Princes Avenue, Watford | - | 32 m² | - |
| Flat 4, 2A Princes Avenue, Watford | - | 66 m² | - |
| Flat 5, 2A Princes Avenue, Watford | - | 59 m² | - |
| Flat 6, 2A Princes Avenue, Watford | - | 63 m² | - |
