| 1, Blackthorn Close, Watford | Freehold | 70 m² | £330,000 (2018) |
| 2, Blackthorn Close, Watford | Freehold | 91 m² | £195,000 (2005) |
| 3, Blackthorn Close, Watford | Freehold | 85 m² | £245,000 (2007) |
| 4 Blackthorn Close, Watford, Watford | Freehold | 80 m² | £445,000 (2022) |
| 5, Blackthorn Close, Watford | Freehold | 82 m² | £326,000 (2015) |
| 7 Blackthorn Close, Watford | - | 72 m² | - |
| 9, Blackthorn Close, Watford | Freehold | 69 m² | £216,000 (2011) |
| 10 Blackthorn Close, Watford | Freehold | 98 m² | £121,950 (1999) |
| 11, Blackthorn Close, Watford | - | 91 m² | - |
| 13 Blackthorn Close, Watford, Watford | Freehold | 94 m² | £422,500 (2021) |
| 17 Blackthorn Close, Watford | - | 72 m² | - |
| 18, Blackthorn Close, Watford | Freehold | 74 m² | £226,000 (2014) |
| 20, Blackthorn Close, Watford | - | 70 m² | - |
| 21 Blackthorn Close, Watford | - | 87 m² | - |
| 23, Blackthorn Close, Watford | Freehold | 84 m² | £220,000 (2010) |
| 25, Blackthorn Close, Watford | - | 74 m² | - |
| 26, Blackthorn Close, Watford | - | 76 m² | - |
| 30 Blackthorn Close, Watford | - | 72 m² | - |
| 31 Blackthorn Close, Watford | - | 72 m² | - |
| 36, Blackthorn Close, Watford | - | 79 m² | - |
| 40 Blackthorn Close, Watford | - | 74 m² | - |
| 42 Blackthorn Close, Watford | - | 83 m² | - |
| 44 Blackthorn Close, Watford | - | 83 m² | - |
| 48, Blackthorn Close, Watford | Freehold | 78 m² | £460,000 (2022) |
| 50, Blackthorn Close, Watford | Freehold | 79 m² | £380,000 (2021) |