| 402 Alpha House, Broad Street, Northampton, Northampton | Leasehold | 66 m² | £167,950 (2007) |
| 405 Alpha House, Broad Street, Northampton, Northampton | Leasehold | 68 m² | £106,000 (2014) |
| 502 Alpha House, Broad Street, Northampton | Leasehold | 66 m² | £167,950 (2007) |
| Flat 302, Alpha House, Broad Street, Northampton | Leasehold | 66 m² | £128,500 (2021) |
| Flat 303 Alpha House, Broad Street, Northampton | Leasehold | 62 m² | £102,000 (2014) |
| Flat 304 Alpha House, Broad Street, Northampton | Leasehold | 68 m² | £102,000 (2014) |
| Flat 305 Alpha House, Broad Street, Northampton | Leasehold | 63 m² | £105,000 (2014) |
| Flat 306 Alpha House, Broad Street, Northampton | Leasehold | 77 m² | £141,000 (2020) |
| Flat 307, Alpha House, Broad Street, Northampton | Leasehold | 46 m² | £96,500 (2025) |
| Flat 308 Alpha House, Broad Street, Northampton | Leasehold | 49 m² | £93,000 (2016) |
| Flat 309, Alpha House, Broad Street, Northampton | Leasehold | 59 m² | £95,000 (2013) |
| Flat 310, Alpha House, Broad Street, Northampton | Leasehold | 60 m² | £88,421 (2009) |
| Flat 311 Alpha House, Broad Street, Northampton | Leasehold | 71 m² | £105,000 (2014) |
| Flat 312, Alpha House, Broad Street, Northampton | Leasehold | 46 m² | £127,896 (2008) |
| Flat 313, Alpha House, Broad Street, Northampton | Leasehold | 46 m² | £102,500 (2024) |
| Flat 314, Alpha House, Broad Street, Northampton | Leasehold | 73 m² | £149,995 (2007) |
| Flat 315 Alpha House, Broad Street, Northampton | Leasehold | 63 m² | £149,000 (2022) |
| Flat 316 Alpha House, Broad Street, Northampton | Leasehold | 61 m² | £138,000 (2019) |
| Flat 317, Alpha House, Broad Street, Northampton | Leasehold | 67 m² | £135,000 (2025) |
| Flat 318 Alpha House, Broad Street, Northampton | Leasehold | 72 m² | £145,000 (2019) |
| Flat 319 Alpha House, Broad Street, Northampton | Leasehold | 75 m² | £149,320 (2008) |
| Flat 320, Alpha House, Broad Street, Northampton | Leasehold | 63 m² | £156,950 (2007) |
| Flat 321 Alpha House, Broad Street, Northampton | - | 70 m² | - |
| Flat 322, Alpha House, Broad Street, Northampton | Leasehold | 61 m² | £150,000 (2018) |
| Flat 323 Alpha House, Broad Street, Northampton | Leasehold | 66 m² | £140,000 (2019) |
| Flat 324, Alpha House, Broad Street, Northampton | Leasehold | 56 m² | £129,600 (2007) |
| Flat 401, Alpha House, Broad Street, Northampton | Leasehold | 48 m² | £103,500 (2017) |
| Flat 403, Alpha House, Northampton | Leasehold | 60 m² | £132,000 (2018) |
| Flat 404 Alpha House, Broad Street, Northampton | Leasehold | 71 m² | £125,000 (2023) |
| Flat 406 Alpha House, Broad Street, Northampton | Leasehold | - | £112,000 (2018) |
| Flat 407, Alpha House, Broad Street, Northampton | Leasehold | 46 m² | £115,000 (2022) |
| Flat 408, Alpha House, Broad Street, Northampton | Leasehold | 59 m² | £130,000 (2024) |
| Flat 409 Alpha House, Broad Street, Northampton | Leasehold | 60 m² | £140,000 (2023) |
| Flat 410 Alpha House, Broad Street, Northampton | Leasehold | 71 m² | £110,000 (2014) |
| Flat 411 Alpha House, Broad Street, Northampton | Leasehold | 46 m² | £95,000 (2016) |
| Flat 412 Alpha House, Broad Street, Northampton | Leasehold | 46 m² | £135,700 (2008) |
| Flat 413 Alpha House, Broad Street, Northampton | Leasehold | 75 m² | £125,000 (2015) |
| Flat 414, Alpha House, Broad Street, Northampton | Leasehold | 60 m² | £158,500 (2007) |
| Flat 415, Alpha House, Broad Street, Northampton | Leasehold | 60 m² | £150,000 (2007) |
| Flat 416, Alpha House, Broad Street, Northampton | - | 62 m² | - |
| Flat 417 Alpha House, Broad Street, Northampton | Leasehold | 71 m² | £150,000 (2022) |
| Flat 418, Alpha House, Broad Street, Northampton | Leasehold | 73 m² | £160,000 (2008) |
| Flat 419, Alpha House, Broad Street, Northampton | Leasehold | 66 m² | £158,000 (2007) |
| Flat 420, Alpha House, Broad Street, Northampton | Leasehold | 68 m² | £133,000 (2019) |
| Flat 421 Alpha House, Broad Street, Northampton | Leasehold | 60 m² | £125,000 (2024) |
| Flat 422 Alpha House, Broad Street, Northampton | Leasehold | 75 m² | £152,784 (2007) |
| Flat 423, Alpha House, Broad Street, Northampton | Leasehold | 49 m² | £132,000 (2007) |
| Flat 501, Alpha House, Broad Street, Northampton | Leasehold | 59 m² | £98,500 (2017) |
| Flat 503 Alpha House, Broad Street, Northampton | Leasehold | 61 m² | £122,000 (2025) |
| Flat 504 Alpha House, Broad Street, Northampton | Leasehold | 54 m² | £137,950 (2008) |
| Flat 505 Alpha House, Broad Street, Northampton | Leasehold | 50 m² | £122,500 (2008) |
| Flat 506 Alpha House, Broad Street, Northampton | Leasehold | 47 m² | £111,000 (2023) |
| Flat 507 Alpha House, Broad Street, Northampton | Leasehold | 47 m² | £113,000 (2018) |
| Flat 508, Alpha House, Broad Street, Northampton | Leasehold | 61 m² | £125,000 (2025) |
| Flat 509, Alpha House, Broad Street, Northampton | Leasehold | 62 m² | £164,250 (2008) |
| Flat 510, Alpha House, Broad Street, Northampton | Leasehold | 68 m² | £145,000 (2023) |
| Flat 511, Alpha House, Broad Street, Northampton | Leasehold | 47 m² | £108,600 (2025) |
| Flat 512, Alpha House, Broad Street, Northampton | Leasehold | 47 m² | £100,000 (2025) |
| Flat 513 Alpha House, Broad Street, Northampton | Leasehold | 70 m² | £163,350 (2008) |
| Flat 514 Alpha House, Broad Street, Northampton | Leasehold | 60 m² | £120,000 (2017) |
| Flat 515, Alpha House, Broad Street, Northampton | Leasehold | 65 m² | £110,000 (2025) |
| Flat 516, Alpha House, Broad Street, Northampton | Leasehold | 66 m² | £100,000 (2026) |
| Flat 517 Alpha House, Broad Street, Northampton | Leasehold | 49 m² | £106,500 (2023) |
| Flat 518 Alpha House, Broad Street, Northampton | Leasehold | 54 m² | £110,000 (2022) |
| Flat 519, Alpha House, Broad Street, Northampton | Leasehold | 60 m² | £154,700 (2007) |
| Flat 520, Alpha House, Broad Street, Northampton | Leasehold | 66 m² | £154,700 (2007) |
| Flat 521, Alpha House, Broad Street, Northampton | Leasehold | 51 m² | £106,000 (2021) |
| Flat 601 Alpha House, Broad Street, Northampton | Leasehold | 46 m² | £112,000 (2023) |
| Flat 602 Alpha House, Broad Street, Northampton | Leasehold | 56 m² | £107,000 (2022) |
| Flat 603 Alpha House, Broad Street, Northampton | Leasehold | 68 m² | £155,200 (2008) |
| Flat 604 Alpha House, Broad Street, Northampton | Leasehold | 74 m² | £150,000 (2018) |
| Flat 605 Alpha House, Broad Street, Northampton | Leasehold | 59 m² | £154,950 (2007) |
| Flat 606 Alpha House, Broad Street, Northampton | Leasehold | 68 m² | £107,500 (2014) |
| Flat 607, Alpha House, Broad Street, Northampton | Leasehold | 55 m² | £129,267 (2007) |
| Flat 608 Alpha House, Broad Street, Northampton | Leasehold | 47 m² | £80,526 (2009) |