| 1 Harper Avenue, Newcastle | Freehold | 76 m² | £180,000 (2025) |
| 3, Harper Avenue, Newcastle | Freehold | 74 m² | £125,000 (2016) |
| 9 Harper Avenue, Newcastle | - | 77 m² | - |
| 11, Harper Avenue, Newcastle | Freehold | 83 m² | £146,000 (2020) |
| 12, Harper Avenue, Newcastle | - | 86 m² | - |
| 14 Harper Avenue, Newcastle | - | 78 m² | - |
| 15, Harper Avenue, Newcastle | Freehold | 73 m² | £133,000 (2017) |
| 16 Harper Avenue, Newcastle | - | 77 m² | - |
| 18 Harper Avenue, Newcastle | - | 74 m² | - |
| 21, Harper Avenue, Newcastle | Freehold | 76 m² | £129,000 (2017) |
| 22 Harper Avenue, Newcastle | Freehold | 98 m² | £70,000 (2026) |
| 23 Harper Avenue, Newcastle | - | 86 m² | - |
| 25 Harper Avenue, Newcastle | - | 77 m² | - |
| 26 Harper Avenue, Newcastle | - | 77 m² | - |
| 27 Harper Avenue, Newcastle | Freehold | 74 m² | £98,000 (2015) |
| 29 Harper Avenue, Newcastle | - | 77 m² | - |
| 31, Harper Avenue, Newcastle | Freehold | 82 m² | £115,000 (2017) |
| 35 Harper Avenue, Newcastle | - | 77 m² | - |
| 39 Harper Avenue, Newcastle | Freehold | 75 m² | £183,000 (2026) |
| 41 Harper Avenue, Newcastle | - | 73 m² | - |
| 43, Harper Avenue, Newcastle | Freehold | 74 m² | £99,950 (2012) |
| 45 Harper Avenue, Newcastle | - | 74 m² | - |
| 49, Harper Avenue, Newcastle | Freehold | 87 m² | £176,000 (2024) |
| 51 Harper Avenue, Newcastle | - | 78 m² | - |
| 53, Harper Avenue, Newcastle | Freehold | 80 m² | £109,000 (2006) |
| 55, Harper Avenue, Newcastle | - | 48 m² | - |
| 57, Harper Avenue, Newcastle | - | 48 m² | - |
