| 1, Harborough Avenue, Sidcup | Freehold | 112 m² | £585,000 (2025) |
| 3 Harborough Avenue, Sidcup | Freehold | 63 m² | £378,250 (2024) |
| 9, Harborough Avenue, Sidcup | Freehold | 64 m² | £138,000 (2002) |
| 11, Harborough Avenue, Sidcup | Freehold | 61 m² | £361,000 (2018) |
| 15, Harborough Avenue, Sidcup | Freehold | 61 m² | £385,000 (2021) |
| 17, Harborough Avenue, Sidcup | Freehold | 107 m² | £510,000 (2019) |
| 19, Harborough Avenue, Sidcup | Freehold | 66 m² | £355,000 (2019) |
| 21, Harborough Avenue, Sidcup | Freehold | 70 m² | £325,000 (2018) |
| 23, Harborough Avenue, Sidcup | Freehold | 94 m² | £410,000 (2020) |
| 25, Harborough Avenue, Sidcup | Freehold | 66 m² | £310,000 (2018) |
| 27, Harborough Avenue, Sidcup | Freehold | 60 m² | £339,995 (2018) |
| 29, Harborough Avenue, Sidcup | Freehold | 65 m² | £307,500 (2019) |
| 31 Harborough Avenue, Sidcup | - | 63 m² | - |
| 39, Harborough Avenue, Sidcup | Freehold | 58 m² | £505,000 (2018) |
| 41, Harborough Avenue, Sidcup | Freehold | 97 m² | £307,000 (2014) |
| 43, Harborough Avenue, Sidcup | Freehold | 63 m² | £193,500 (2006) |
| 45 Harborough Avenue, Sidcup | Freehold | 71 m² | £415,000 (2022) |
| 47, Harborough Avenue, Sidcup | Freehold | 114 m² | £495,000 (2021) |
| 51, Harborough Avenue, Sidcup | Freehold | 66 m² | £403,000 (2022) |
| 57, Harborough Avenue, Sidcup | Freehold | 108 m² | £520,000 (2020) |
| 59, Harborough Avenue, Sidcup | Freehold | 70 m² | £375,000 (2022) |
| 61 Harborough Avenue, Sidcup | Freehold | 65 m² | £192,000 (2006) |
| 63 Harborough Avenue, Sidcup | Freehold | 103 m² | £61,000 (1995) |
| 65, Harborough Avenue, Sidcup | Freehold | 92 m² | £248,000 (2006) |
| 69, Harborough Avenue, Sidcup | Freehold | 63 m² | £259,995 (2014) |
| 75, Harborough Avenue, Sidcup | Freehold | 60 m² | £390,000 (2025) |
| 81, Harborough Avenue, Sidcup | Freehold | 80 m² | £260,000 (2012) |