| 2, Washington Street, Northampton | Freehold | 84 m² | £183,000 (2017) |
| 4, Washington Street, Northampton | Freehold | 72 m² | £110,000 (2003) |
| 8 Washington Street, Northampton | Freehold | 76 m² | £196,000 (2024) |
| 10, Washington Street, Northampton | Freehold | 90 m² | £196,000 (2017) |
| 12, Washington Street, Northampton | Freehold | 91 m² | £190,000 (2019) |
| 14, Washington Street, Northampton | Freehold | 104 m² | £74,995 (2000) |
| 16, Washington Street, Northampton | Freehold | 117 m² | £240,300 (2022) |
| 18, Washington Street, Northampton | Freehold | 127 m² | £164,995 (2009) |
| 20 Washington Street, Northampton | Freehold | 93 m² | £180,000 (2025) |
| 22 Washington Street, Northampton | Freehold | 108 m² | £240,000 (2026) |
| 24, Washington Street, Northampton | Freehold | 89 m² | £175,000 (2020) |
| 26, Washington Street, Northampton | Freehold | 91 m² | £197,000 (2019) |
| 28, Washington Street, Northampton | Freehold | 73 m² | £125,000 (2013) |
| 30, Washington Street, Northampton | Freehold | 77 m² | £220,000 (2021) |
| 32 Washington Street, Northampton | Freehold | 78 m² | £190,000 (2024) |
| 36 Washington Street, Northampton | Freehold | 75 m² | £145,000 (2014) |
| 38 Washington Street, Northampton | Freehold | 74 m² | £230,000 (2024) |
| 42 Washington Street, Northampton | Freehold | 76 m² | £230,000 (2025) |
| 44, Washington Street, Northampton | Freehold | 87 m² | £131,000 (2009) |
| 48 Washington Street, Northampton | Freehold | 67 m² | £148,000 (2014) |
| 50, Washington Street, Northampton | Freehold | 92 m² | £189,000 (2017) |
| 52 Washington Street, Northampton, Northampton | Freehold | 76 m² | £231,350 (2022) |
| 54 Washington Street, Northampton | Freehold | 69 m² | £222,500 (2026) |
| 56 Washington Street, Northampton | Freehold | 88 m² | £228,000 (2025) |
| 58, Washington Street, Northampton | Freehold | 78 m² | £230,000 (2024) |
| 62, Washington Street, Northampton | Freehold | 78 m² | £180,000 (2020) |
| 64 Washington Street, Northampton | Freehold | 147 m² | £230,000 (2023) |