| 45, North Western Avenue, Watford | - | 107 m² | - |
| 47, North Western Avenue, Watford | Freehold | 72 m² | £390,000 (2016) |
| 49 North Western Avenue, Watford | Freehold | 76 m² | £212,000 (2006) |
| 51, North Western Avenue, Watford | Freehold | 67 m² | £418,200 (2019) |
| 59, North Western Avenue, Watford | Freehold | 72 m² | £193,500 (2002) |
| 67, North Western Avenue, Watford | Freehold | 87 m² | £247,000 (2011) |
| 75 North Western Avenue, Watford | Freehold | 74 m² | £425,000 (2022) |
| 77, North Western Avenue, Watford | Freehold | 95 m² | £420,000 (2021) |
| 79, North Western Avenue, Watford | Freehold | 44 m² | £20,000 (2018) |
| 79A, North Western Avenue, Watford | Leasehold | 46 m² | £156,000 (2010) |
| 83A, North Western Avenue, Watford | Leasehold | 45 m² | £285,000 (2017) |
| 87, North Western Avenue, Watford | Freehold | 79 m² | £305,000 (2014) |
| 89A, North Western Avenue, Watford | Leasehold | 48 m² | £30,000 (1996) |
| 91 North Western Avenue, Watford | - | 50 m² | - |
| 91A North Western Avenue, Watford | - | 50 m² | - |
| 93, North Western Avenue, Watford | Freehold | 140 m² | £245,000 (2007) |
| 95, North Western Avenue, Watford | - | 41 m² | - |
| 95A North Western Avenue, Watford | Leasehold | 56 m² | £300,000 (2021) |
| 95B North Western Avenue, Watford | Leasehold | 57 m² | £330,000 (2025) |
| 97A North Western Avenue, Watford | Leasehold | 42 m² | £40,000 (1997) |
| 101, North Western Avenue, Watford | Freehold | 104 m² | £499,950 (2020) |
| 103 North Western Avenue, Watford, Watford | Freehold | 65 m² | £193,000 (2010) |
| 103A North Western Avenue, Watford, Watford | Freehold | 62 m² | £303,000 (2019) |
| 105 North Western Avenue, Watford | Leasehold | 43 m² | £207,000 (2017) |
| 105A, North Western Avenue, Watford | Leasehold | 47 m² | £269,950 (2019) |
| 107, North Western Avenue, Watford | Leasehold | 46 m² | £240,000 (2021) |
| Flat 6, 85 North Western Avenue, Watford | Freehold | 23 m² | £385,000 (2024) |
