| 37 Hartley Square, Seaton Sluice, Whitley Bay | Freehold | 56 m² | £145,000 (2024) |
| 37A Hartley Square, Seaton Sluice, Whitley Bay | Freehold | 108 m² | £240,000 (2022) |
| 38, Hartley Square, Seaton Sluice, Whitley Bay | Freehold | 55 m² | £113,000 (2019) |
| 39, Hartley Square, Seaton Sluice, Whitley Bay | Freehold | 61 m² | £90,000 (2018) |
| 40 Hartley Square, Seaton Sluice, Whitley Bay | - | 57 m² | - |
| 41, Hartley Square, Seaton Sluice, Whitley Bay | - | 59 m² | - |
| 42, Hartley Square, Seaton Sluice, Whitley Bay | - | 63 m² | - |
| 43, Hartley Square, Seaton Sluice, Whitley Bay | Freehold | 61 m² | £90,000 (2018) |
| 44, Hartley Square, Seaton Sluice, Whitley Bay | - | 72 m² | - |
| 45, Hartley Square, Seaton Sluice, Whitley Bay | - | 72 m² | - |
| 46 Hartley Square, Seaton Sluice, Whitley Bay | - | 63 m² | - |
| 47, Hartley Square, Seaton Sluice, Whitley Bay | Freehold | 60 m² | £111,000 (2020) |
| 48 Hartley Square, Seaton Sluice, Whitley Bay | Freehold | 77 m² | £90,000 (2010) |
| 50, Hartley Square, Seaton Sluice, Whitley Bay | Freehold | 63 m² | £80,000 (2007) |
| 51, Hartley Square, Seaton Sluice, Whitley Bay | - | 64 m² | - |
| 52, Hartley Square, Seaton Sluice, Whitley Bay | Freehold | 72 m² | £105,000 (2011) |
| 53, Hartley Square, Seaton Sluice, Whitley Bay | - | 72 m² | - |
| 54 Hartley Square, Seaton Sluice, Whitley Bay | - | 66 m² | - |
| 55 Hartley Square, Seaton Sluice, Whitley Bay | - | 84 m² | - |
| 56, Hartley Square, Seaton Sluice, Whitley Bay | Freehold | 72 m² | £117,000 (2013) |
| 58, Hartley Square, Seaton Sluice, Whitley Bay | Freehold | 59 m² | £100,000 (2019) |
| 62, Hartley Square, Seaton Sluice, Whitley Bay | - | 63 m² | - |
| 63 Hartley Square, Seaton Sluice, Whitley Bay | Freehold | 55 m² | £190,000 (2025) |
| 64 Hartley Square, Seaton Sluice, Whitley Bay | Freehold | 51 m² | £97,000 (2014) |
| 68 Hartley Square, Seaton Sluice, Whitley Bay | - | 74 m² | - |
| 69, Hartley Square, Seaton Sluice, Whitley Bay | Freehold | 319 m² | £187,000 (2026) |
| 71 Hartley Square, Seaton Sluice, Whitley Bay | - | 61 m² | - |
| 72, Hartley Square, Seaton Sluice, Whitley Bay | - | 57 m² | - |
| 73 Hartley Square, Seaton Sluice, Whitley Bay | Freehold | 59 m² | £110,000 (2020) |
| 74 Hartley Square, Seaton Sluice, Whitley Bay | - | 59 m² | - |
| 75, Hartley Square, Seaton Sluice, Whitley Bay | Freehold | 58 m² | £115,000 (2021) |
| 76, Hartley Square, Seaton Sluice, Whitley Bay | Freehold | 69 m² | £169,950 (2024) |
| 78 Hartley Square, Seaton Sluice, Whitley Bay | Freehold | 52 m² | £128,000 (2026) |
| 79, Hartley Square, Seaton Sluice, Whitley Bay | - | 57 m² | - |