| 17, Northfield Avenue, Orpington | - | 87 m² | - |
| 18 Northfield Avenue, Orpington | Freehold | 55 m² | £412,000 (2024) |
| 19 Northfield Avenue, Orpington | Freehold | 61 m² | £371,420 (2025) |
| 20, Northfield Avenue, Orpington | Freehold | 72 m² | £375,000 (2018) |
| 21 Northfield Avenue, Orpington | Freehold | 65 m² | £392,000 (2024) |
| 23, Northfield Avenue, Orpington | - | 57 m² | - |
| 24, Northfield Avenue, Orpington | Freehold | 58 m² | £205,000 (2012) |
| 26, Northfield Avenue, Orpington | Freehold | 58 m² | £275,000 (2015) |
| 27 Northfield Avenue, Orpington | Freehold | 105 m² | £555,000 (2026) |
| 28, Northfield Avenue, Orpington | Freehold | 60 m² | £272,500 (2014) |
| 29 Northfield Avenue, Orpington | Freehold | 74 m² | £465,000 (2022) |
| 30, Northfield Avenue, Orpington | Freehold | 89 m² | £407,000 (2020) |
| 31, Northfield Avenue, Orpington | Freehold | 82 m² | £221,000 (2005) |
| 32 Northfield Avenue, Orpington | Freehold | 77 m² | £206,000 (2010) |
| 33 Northfield Avenue, Orpington | Freehold | 75 m² | £418,000 (2024) |
| 34, Northfield Avenue, Orpington | Freehold | 56 m² | £184,000 (2009) |
| 35 Northfield Avenue, Orpington | Freehold | 77 m² | £405,000 (2025) |
| 36, Northfield Avenue, Orpington | Freehold | 56 m² | £198,000 (2011) |
| 37 Northfield Avenue, Orpington, Orpington | Freehold | 55 m² | £175,000 (2009) |
| 38 Northfield Avenue, Orpington | Freehold | 55 m² | £422,000 (2025) |
| 39, Northfield Avenue, Orpington | Freehold | 70 m² | £200,000 (2005) |
| 40 Northfield Avenue, Orpington | Freehold | 64 m² | £415,000 (2022) |
| 44 Northfield Avenue, Orpington | Freehold | 62 m² | £400,000 (2026) |
| 46, Northfield Avenue, Orpington | Freehold | 150 m² | £430,000 (2020) |
| 48, Northfield Avenue, Orpington | Freehold | 61 m² | £199,950 (2009) |
| 50 Northfield Avenue, Orpington, Orpington | Freehold | 56 m² | £417,500 (2021) |
| 52, Northfield Avenue, Orpington | Freehold | 121 m² | £475,000 (2019) |
