| 4 Harborough Avenue, Sidcup | Freehold | 72 m² | £360,000 (2025) |
| 6 Harborough Avenue, Sidcup | Freehold | 61 m² | £355,000 (2024) |
| 8, Harborough Avenue, Sidcup | Freehold | 49 m² | £365,000 (2021) |
| 14, Harborough Avenue, Sidcup | Freehold | 68 m² | £340,000 (2019) |
| 16, Harborough Avenue, Sidcup | Freehold | 92 m² | £540,000 (2025) |
| 20 Harborough Avenue, Sidcup | Freehold | 52 m² | £380,000 (2024) |
| 24, Harborough Avenue, Sidcup | Freehold | 76 m² | £250,000 (2012) |
| 30, Harborough Avenue, Sidcup | Freehold | 52 m² | £340,000 (2020) |
| 40, Harborough Avenue, Sidcup | - | 59 m² | - |
| 42 Harborough Avenue, Sidcup | Freehold | 104 m² | £530,000 (2026) |
| 44 Harborough Avenue, Sidcup | Freehold | 64 m² | £405,000 (2023) |
| 50 Harborough Avenue, Sidcup | Freehold | 86 m² | £385,000 (2024) |
| 54, Harborough Avenue, Sidcup | Freehold | 63 m² | £185,500 (2009) |
| 58, Harborough Avenue, Sidcup | Freehold | 106 m² | £425,000 (2016) |
| 60 Harborough Avenue, Sidcup | Freehold | 65 m² | £194,000 (2012) |
| 62, Harborough Avenue, Sidcup | Freehold | 63 m² | £355,000 (2016) |
| 64 Harborough Avenue, Sidcup | Freehold | 102 m² | £178,000 (2003) |
| 66, Harborough Avenue, Sidcup | Freehold | 51 m² | £335,000 (2019) |
| 70, Harborough Avenue, Sidcup | Freehold | 61 m² | £342,500 (2019) |
| 74, Harborough Avenue, Sidcup | Freehold | 86 m² | £435,000 (2020) |
| 80 Harborough Avenue, Sidcup, Sidcup | Freehold | 109 m² | £470,000 (2020) |