| Flat 1, 1 Frogmore Avenue, Watford, Watford | Leasehold | 82 m² | £460,000 (2021) |
| Flat 2, 1 Frogmore Avenue, Watford, Watford | Leasehold | 62 m² | £370,000 (2022) |
| Flat 3, 1 Frogmore Avenue, Watford, Watford | Leasehold | 51 m² | £320,000 (2021) |
| Flat 4, 1 Frogmore Avenue, Watford, Watford | Leasehold | 73 m² | £407,400 (2022) |
| Flat 5, 1 Frogmore Avenue, Watford, Watford | Leasehold | 75 m² | £430,000 (2022) |
| Flat 6, 1 Frogmore Avenue, Watford, Watford | Leasehold | 74 m² | £446,400 (2021) |
| Flat 7, 1 Frogmore Avenue, Watford, Watford | Leasehold | 40 m² | £265,100 (2022) |
| Flat 8, 1 Frogmore Avenue, Watford, Watford | Leasehold | 67 m² | £455,000 (2021) |
| Flat 9, 1 Frogmore Avenue, Watford, Watford | Leasehold | 43 m² | £310,000 (2021) |
| Flat 10, 1 Frogmore Avenue, Watford, Watford | - | 43 m² | - |
| Flat 11, 1 Frogmore Avenue, Watford, Watford | Leasehold | 43 m² | £318,000 (2021) |
| Flat 12, 1 Frogmore Avenue, Watford, Watford | Leasehold | 62 m² | £400,000 (2023) |
| Flat 13, 1 Frogmore Avenue, Watford, Watford | Leasehold | 61 m² | £407,400 (2022) |
| Flat 14, 1 Frogmore Avenue, Watford, Watford | Leasehold | 63 m² | £391,400 (2022) |
| Flat 15, 1 Frogmore Avenue, Watford, Watford | Leasehold | 63 m² | £407,400 (2021) |
| Flat 16, 1 Frogmore Avenue, Watford, Watford | Leasehold | 78 m² | £430,000 (2022) |
| Flat 17, 1 Frogmore Avenue, Watford, Watford | Leasehold | 52 m² | £351,000 (2021) |
| Flat 18, 1 Frogmore Avenue, Watford, Watford | Leasehold | 70 m² | £469,650 (2022) |
| Flat 19, 1 Frogmore Avenue, Watford, Watford | Leasehold | 70 m² | £467,000 (2021) |
| Flat 20, 1 Frogmore Avenue, Watford, Watford | Leasehold | 51 m² | £315,000 (2022) |
| Flat 21, 1 Frogmore Avenue, Watford, Watford | Leasehold | 50 m² | £319,000 (2022) |
| Flat 22, 1 Frogmore Avenue, Watford, Watford | Leasehold | 66 m² | £407,400 (2021) |
| Flat 23, 1 Frogmore Avenue, Watford, Watford | Leasehold | 51 m² | £340,000 (2021) |
| Flat 24, 1 Frogmore Avenue, Watford, Watford | Leasehold | 73 m² | £407,400 (2022) |
| Flat 25, 1 Frogmore Avenue, Watford, Watford | Leasehold | 75 m² | £450,000 (2022) |
| Flat 26, 1 Frogmore Avenue, Watford, Watford | Leasehold | 74 m² | £465,000 (2021) |
| Flat 27, 1 Frogmore Avenue, Watford, Watford | Leasehold | 40 m² | £265,500 (2022) |
| Flat 28, 1 Frogmore Avenue, Watford, Watford | Leasehold | 67 m² | £422,750 (2023) |
| Flat 29, 1 Frogmore Avenue, Watford, Watford | Leasehold | 43 m² | £310,000 (2021) |
| Flat 30, 1 Frogmore Avenue, Watford, Watford | Leasehold | 43 m² | £318,000 (2021) |
| Flat 31, 1 Frogmore Avenue, Watford, Watford | Leasehold | 43 m² | £318,000 (2021) |
| Flat 32, 1 Frogmore Avenue, Watford, Watford | Leasehold | 62 m² | £407,400 (2021) |
| Flat 33, 1 Frogmore Avenue, Watford, Watford | Leasehold | 61 m² | £407,000 (2021) |
| Flat 34, 1 Frogmore Avenue, Watford, Watford | Leasehold | 63 m² | £407,400 (2021) |
| Flat 35, 1 Frogmore Avenue, Watford, Watford | Leasehold | 63 m² | £400,000 (2021) |
| Flat 36, 1 Frogmore Avenue, Watford, Watford | Leasehold | 78 m² | £460,000 (2021) |
| Flat 37, 1 Frogmore Avenue, Watford, Watford | Leasehold | 64 m² | £407,400 (2021) |
| Flat 38, 1 Frogmore Avenue, Watford, Watford | Leasehold | 70 m² | £445,000 (2022) |
| Flat 39, 1 Frogmore Avenue, Watford, Watford | Leasehold | 70 m² | £475,000 (2021) |
| Flat 40, 1 Frogmore Avenue, Watford, Watford | Leasehold | 51 m² | £330,000 (2022) |
| Flat 41, 1 Frogmore Avenue, Watford, Watford | Leasehold | 50 m² | £350,000 (2025) |
| Flat 42, 1 Frogmore Avenue, Watford, Watford | Leasehold | 66 m² | £407,400 (2021) |
| Flat 43, 1 Frogmore Avenue, Watford, Watford | Leasehold | 51 m² | £330,000 (2022) |
| Flat 44, 1 Frogmore Avenue, Watford, Watford | Leasehold | 73 m² | £460,000 (2022) |
| Flat 45, 1 Frogmore Avenue, Watford, Watford | Leasehold | 75 m² | £459,000 (2022) |
| Flat 46, 1 Frogmore Avenue, Watford, Watford | Leasehold | 74 m² | £450,000 (2022) |
| Flat 47, 1 Frogmore Avenue, Watford, Watford | Leasehold | 40 m² | £288,000 (2022) |
| Flat 48, 1 Frogmore Avenue, Watford, Watford | Leasehold | 67 m² | £458,000 (2022) |
| Flat 49, 1 Frogmore Avenue, Watford, Watford | Leasehold | 43 m² | £304,000 (2021) |
| Flat 50, 1 Frogmore Avenue, Watford, Watford | Leasehold | 43 m² | £304,888 (2021) |
| Flat 51, 1 Frogmore Avenue, Watford, Watford | Leasehold | 43 m² | £314,580 (2021) |
| Flat 52, 1 Frogmore Avenue, Watford, Watford | Leasehold | 62 m² | £402,750 (2023) |
| Flat 53, 1 Frogmore Avenue, Watford, Watford | Leasehold | 61 m² | £392,000 (2023) |
| Flat 54, 1 Frogmore Avenue, Watford, Watford | Leasehold | 63 m² | £365,000 (2024) |
| Flat 55, 1 Frogmore Avenue, Watford, Watford | Leasehold | 63 m² | £410,000 (2022) |
| Flat 56, 1 Frogmore Avenue, Watford, Watford | Leasehold | 78 m² | £445,000 (2021) |
| Flat 57, 1 Frogmore Avenue, Watford, Watford | Leasehold | 64 m² | £416,000 (2021) |
| Flat 58, 1 Frogmore Avenue, Watford, Watford | Leasehold | 70 m² | £455,000 (2022) |
| Flat 59, 1 Frogmore Avenue, Watford, Watford | Leasehold | 70 m² | £455,000 (2022) |
| Flat 60, 1 Frogmore Avenue, Watford, Watford | Leasehold | 51 m² | £346,750 (2022) |
| Flat 61, 1 Frogmore Avenue, Watford, Watford | Leasehold | 50 m² | £340,000 (2021) |
| Flat 62, 1 Frogmore Avenue, Watford, Watford | Leasehold | 66 m² | £425,000 (2022) |
| Flat 63, 1 Frogmore Avenue, Watford, Watford | Leasehold | 51 m² | £340,000 (2021) |
| Flat 64, 1 Frogmore Avenue, Watford, Watford | Leasehold | 73 m² | £443,500 (2022) |
| Flat 65, 1 Frogmore Avenue, Watford, Watford | Leasehold | 75 m² | £489,600 (2021) |
| Flat 66, 1 Frogmore Avenue, Watford, Watford | Leasehold | 74 m² | £459,000 (2022) |
| Flat 67, 1 Frogmore Avenue, Watford, Watford | Leasehold | 40 m² | £285,123 (2023) |
| Flat 68, 1 Frogmore Avenue, Watford, Watford | Leasehold | 67 m² | £450,000 (2022) |
| Flat 69, 1 Frogmore Avenue, Watford, Watford | Leasehold | 43 m² | £312,550 (2022) |
| Flat 70, 1 Frogmore Avenue, Watford, Watford | Leasehold | 43 m² | £315,000 (2021) |
| Flat 71, 1 Frogmore Avenue, Watford, Watford | Leasehold | 43 m² | £322,420 (2021) |
| Flat 72, 1 Frogmore Avenue, Watford, Watford | Leasehold | 62 m² | £411,600 (2023) |
| Flat 73, 1 Frogmore Avenue, Watford, Watford | Leasehold | 61 m² | £413,000 (2022) |
| Flat 74, 1 Frogmore Avenue, Watford, Watford | Leasehold | 63 m² | £411,600 (2023) |
| Flat 75, 1 Frogmore Avenue, Watford, Watford | - | 63 m² | - |
| Flat 76, 1 Frogmore Avenue, Watford, Watford | Leasehold | 78 m² | £430,000 (2024) |
| Flat 77, 1 Frogmore Avenue, Watford, Watford | Leasehold | 64 m² | £412,800 (2022) |
| Flat 78, 1 Frogmore Avenue, Watford, Watford | Leasehold | 71 m² | £510,000 (2022) |
| Flat 79, 1 Frogmore Avenue, Watford, Watford | Leasehold | 69 m² | £474,350 (2023) |
| Flat 80, 1 Frogmore Avenue, Watford, Watford | Leasehold | 50 m² | £360,000 (2021) |
| Flat 81, 1 Frogmore Avenue, Watford, Watford | Leasehold | 66 m² | £435,000 (2022) |
| Flat 82, 1 Frogmore Avenue, Watford, Watford | Leasehold | 70 m² | £472,500 (2023) |
| Flat 83, 1 Frogmore Avenue, Watford, Watford | Leasehold | 67 m² | £454,500 (2022) |
| Flat 84, 1 Frogmore Avenue, Watford, Watford | Leasehold | 43 m² | £306,000 (2022) |
| Flat 85, 1 Frogmore Avenue, Watford, Watford | Leasehold | 43 m² | £320,000 (2022) |
| Flat 86, 1 Frogmore Avenue, Watford, Watford | Leasehold | 79 m² | £520,000 (2021) |
| Flat 87, 1 Frogmore Avenue, Watford, Watford | Leasehold | 79 m² | £540,500 (2022) |
| Flat 88, 1 Frogmore Avenue, Watford, Watford | Leasehold | 63 m² | £407,400 (2022) |
| Flat 89, 1 Frogmore Avenue, Watford, Watford | Leasehold | 80 m² | £460,000 (2021) |
| Flat 90, 1 Frogmore Avenue, Watford, Watford | Leasehold | 74 m² | £530,000 (2022) |
| Flat 91, 1 Frogmore Avenue, Watford, Watford | Leasehold | 76 m² | £521,700 (2021) |
| Flat 92, 1 Frogmore Avenue, Watford, Watford | Leasehold | 66 m² | £436,500 (2021) |
