| Flat 1, Sonar House, 477-479 Whippendell Road, Watford | - | 60 m² | - |
| Flat 2, Sonar House, 477-479 Whippendell Road, Watford | - | 56 m² | - |
| Flat 3, Sonar House, 477-479 Whippendell Road, Watford | - | 58 m² | - |
| Flat 4, Sonar House, 477-479 Whippendell Road, Watford | - | 63 m² | - |
| Flat 5, Sonar House, 477-479 Whippendell Road, Watford | - | 70 m² | - |
| Flat 6, Sonar House, 477-479 Whippendell Road, Watford | - | 61 m² | - |
| Flat 7, Sonar House, 477-479 Whippendell Road, Watford | - | 72 m² | - |
| Flat 8, Sonar House, 477-479 Whippendell Road, Watford | - | 50 m² | - |
| Flat 9, Sonar House, 477-479 Whippendell Road, Watford | - | 51 m² | - |
| Flat 10, Sonar House, 477-479 Whippendell Road, Watford | - | 63 m² | - |
| Flat 11, Sonar House, 477-479 Whippendell Road, Watford | - | 50 m² | - |
| Flat 12, Sonar House, 477-479 Whippendell Road, Watford | - | 49 m² | - |
| Flat 13, Sonar House, 477-479 Whippendell Road, Watford | - | 70 m² | - |
| Flat 14, Sonar House, 477-479 Whippendell Road, Watford | - | 55 m² | - |
| Flat 15, Sonar House, 477-479 Whippendell Road, Watford | - | 72 m² | - |
| Flat 16, Sonar House, 477-479 Whippendell Road, Watford | - | 50 m² | - |
| Flat 17, Sonar House, 477-479 Whippendell Road, Watford | - | 51 m² | - |
| Flat 18, Sonar House, 477-479 Whippendell Road, Watford | - | 63 m² | - |
| Flat 19, Sonar House, 477-479 Whippendell Road, Watford | - | 50 m² | - |
| Flat 20, Sonar House, 477-479 Whippendell Road, Watford | - | 49 m² | - |
| Flat 21, Sonar House, 477-479 Whippendell Road, Watford | - | 70 m² | - |
| Flat 22, Sonar House, 477-479 Whippendell Road, Watford | - | 55 m² | - |
| Flat 23, Sonar House, 477-479 Whippendell Road, Watford | - | 91 m² | - |
| Flat 24, Sonar House, 477-479 Whippendell Road, Watford | - | 115 m² | - |
| Flat 25, Sonar House, 477-479 Whippendell Road, Watford | - | 115 m² | - |
| Flat 26, Sonar House, 477-479 Whippendell Road, Watford | - | 61 m² | - |
| Flat 27, Sonar House, 477-479 Whippendell Road, Watford | - | 70 m² | - |
| Flat 28, Sonar House, 477-479 Whippendell Road, Watford | - | 49 m² | - |
| Flat 29, Sonar House, 477-479 Whippendell Road, Watford | - | 50 m² | - |
| Flat 30, Sonar House, 477-479 Whippendell Road, Watford | - | 63 m² | - |
| Flat 31, Sonar House, 477-479 Whippendell Road, Watford | - | 58 m² | - |
| Flat 32, Sonar House, 477-479 Whippendell Road, Watford | Leasehold | 56 m² | £145,062 (2023) |
| Flat 33, Sonar House, 477-479 Whippendell Road, Watford | - | 60 m² | - |
| Flat 34, Sonar House, 477-479 Whippendell Road, Watford | - | 55 m² | - |
| Flat 35, Sonar House, 477-479 Whippendell Road, Watford | Leasehold | 70 m² | £177,500 (2023) |
| Flat 36, Sonar House, 477-479 Whippendell Road, Watford | - | 49 m² | - |
| Flat 37, Sonar House, 477-479 Whippendell Road, Watford | Leasehold | 50 m² | £108,000 (2023) |
| Flat 38, Sonar House, 477-479 Whippendell Road, Watford | Leasehold | 63 m² | £108,000 (2023) |
| Flat 39, Sonar House, 477-479 Whippendell Road, Watford | Leasehold | 51 m² | £108,000 (2023) |
| Flat 40, Sonar House, 477-479 Whippendell Road, Watford | - | 50 m² | - |
| Flat 41, Sonar House, 477-479 Whippendell Road, Watford | - | 72 m² | - |
| Flat 42, Sonar House, 477-479 Whippendell Road, Watford | - | 55 m² | - |
| Flat 43, Sonar House, 477-479 Whippendell Road, Watford | - | 70 m² | - |
| Flat 44, Sonar House, 477-479 Whippendell Road, Watford | - | 49 m² | - |
| Flat 45, Sonar House, 477-479 Whippendell Road, Watford | - | 50 m² | - |
| Flat 46, Sonar House, 477-479 Whippendell Road, Watford | - | 63 m² | - |
| Flat 47, Sonar House, 477-479 Whippendell Road, Watford | - | 51 m² | - |
| Flat 48, Sonar House, 477-479 Whippendell Road, Watford | - | 50 m² | - |
| Flat 49, Sonar House, 477-479 Whippendell Road, Watford | - | 72 m² | - |
| Flat 50, Sonar House, 477-479 Whippendell Road, Watford | - | 115 m² | - |
| Flat 51, Sonar House, 477-479 Whippendell Road, Watford | - | 115 m² | - |
| Flat 52, Sonar House, 477-479 Whippendell Road, Watford | - | 91 m² | - |
