| 1 Northumberland Avenue, Southend-On-Sea | Freehold | 113 m² | £350,000 (2022) |
| 2, Northumberland Avenue, Southend-On-Sea | Freehold | 96 m² | £325,000 (2024) |
| 3, Northumberland Avenue, Southend-On-Sea | Freehold | 95 m² | £148,000 (2006) |
| 5, Northumberland Avenue, Southend-On-Sea | Freehold | 105 m² | £181,000 (2013) |
| 6 Northumberland Avenue, Southend-On-Sea | - | 175 m² | - |
| 6A Northumberland Avenue, Southend-On-Sea | - | 52 m² | - |
| 7 Northumberland Avenue, Southend-On-Sea | Freehold | 149 m² | £305,000 (2021) |
| 8 Northumberland Avenue, Southend-On-Sea | Leasehold | 48 m² | £23,750 (1999) |
| 8A Northumberland Avenue, Southend-On-Sea, Southend-On-Sea | Leasehold | 52 m² | £79,000 (2004) |
| 10 Northumberland Avenue, Southend-On-Sea | Freehold | 101 m² | £160,000 (2006) |
| 11, Northumberland Avenue, Southend-On-Sea | Leasehold | 48 m² | £165,000 (2019) |
| 11A Northumberland Avenue, Southend-On-Sea | Leasehold | 53 m² | £124,000 (2016) |
| 12 Northumberland Avenue, Southend-On-Sea | Freehold | 92 m² | £337,560 (2023) |
| 13 Northumberland Avenue, Southend-On-Sea, Southend-On-Sea | Freehold | 89 m² | £174,050 (2007) |
| 14, Northumberland Avenue, Southend-On-Sea | - | 95 m² | - |
| 15, Northumberland Avenue, Southend-On-Sea | - | 95 m² | - |
| 19, Northumberland Avenue, Southend-On-Sea | Freehold | 59 m² | £135,000 (2004) |
| 20 Northumberland Avenue, Southend-On-Sea | Freehold | 108 m² | £180,000 (2004) |
| 21 Northumberland Avenue, Southend-On-Sea | Freehold | 100 m² | £180,000 (2004) |
| 22, Northumberland Avenue, Southend-On-Sea | Freehold | 114 m² | £300,000 (2018) |
| 24 Northumberland Avenue, Southend-On-Sea, Southend-On-Sea | Freehold | 102 m² | £205,000 (2012) |
| 25, Northumberland Avenue, Southend-On-Sea | Freehold | 58 m² | £140,000 (2014) |
| 26 Northumberland Avenue, Southend-On-Sea | Freehold | 84 m² | £189,500 (2004) |
| 27, Northumberland Avenue, Southend-On-Sea | Freehold | 99 m² | £314,000 (2020) |
| 28 Northumberland Avenue, Southend-On-Sea | Freehold | 99 m² | £210,000 (2014) |
| 29 Northumberland Avenue, Southend-On-Sea | Freehold | 97 m² | £300,000 (2021) |
| 30, Northumberland Avenue, Southend-On-Sea | Freehold | 97 m² | £347,500 (2021) |
| 31, Northumberland Avenue, Southend-On-Sea | Freehold | 58 m² | £159,000 (2015) |
| 41 Northumberland Avenue, Southend | - | 71 m² | - |
| 42 Northumberland Avenue, Southend | - | 69 m² | - |