| 5, Romilly Drive, Watford | Leasehold | 43 m² | £188,000 (2014) |
| 7 Romilly Drive, Watford | Leasehold | 40 m² | £240,000 (2019) |
| 9 Romilly Drive, Watford | Leasehold | 40 m² | £265,000 (2017) |
| 11 Romilly Drive, Carpenders Park, Carpenders Park | Leasehold | 61 m² | £260,000 (2021) |
| 17, Romilly Drive, Watford | Leasehold | 63 m² | £115,000 (2002) |
| 19 Romilly Drive, Watford | - | 57 m² | - |
| 21 Romilly Drive, Watford | - | 63 m² | - |
| 23, Romilly Drive, Watford | - | 62 m² | - |
| 25, Romilly Drive, Watford | Leasehold | 60 m² | £300,000 (2023) |
| 27, Romilly Drive, Watford | Leasehold | 59 m² | £145,000 (2006) |
| 29 Romilly Drive, Watford | Leasehold | 59 m² | £185,000 (2007) |
| 31, Romilly Drive, Watford | Leasehold | 61 m² | £300,000 (2024) |
| 35, Romilly Drive, Watford | - | 62 m² | - |
| 37 Romilly Drive, Watford | Freehold | 80 m² | £490,000 (2022) |
| 39 Romilly Drive, Watford | Freehold | 114 m² | £340,000 (2014) |
| 41, Romilly Drive, Watford | - | 79 m² | - |
| 49, Romilly Drive, Watford | Freehold | 82 m² | £400,000 (2016) |
| 51 Romilly Drive, Carpenders Park, Watford | Leasehold | 83 m² | £38,750 (1997) |
| 57 Romilly Drive, Watford | Freehold | 102 m² | £545,000 (2025) |
| 59, Romilly Drive, Watford | - | 85 m² | - |
| 61, Romilly Drive, Watford | - | 84 m² | - |
| 63, Romilly Drive, Watford | Freehold | 84 m² | £200,000 (2024) |
| 67, Romilly Drive, Watford | Freehold | 113 m² | £460,000 (2018) |
| 69, Romilly Drive, Watford | Freehold | 103 m² | £250,000 (2012) |
| 71, Romilly Drive, Watford | - | 96 m² | - |
| 73, Romilly Drive, Watford | Freehold | 90 m² | £248,950 (2011) |
| 75, Romilly Drive, Watford | - | 96 m² | - |
| 77 Romilly Drive, Watford | Freehold | 83 m² | £475,000 (2025) |
