| 1, Portland Avenue, Gravesend | Freehold | 80 m² | £185,000 (2013) |
| 2 Portland Avenue, Gravesend | Freehold | 77 m² | £199,995 (2014) |
| 4, Portland Avenue, Gravesend | Freehold | 74 m² | £285,000 (2023) |
| 5, Portland Avenue, Gravesend | Freehold | 74 m² | £60,000 (1997) |
| 6 Portland Avenue, Gravesend | Freehold | 82 m² | £190,000 (2014) |
| 7 Portland Avenue, Gravesend, Gravesend | Freehold | 74 m² | £267,000 (2020) |
| 8, Portland Avenue, Gravesend | Freehold | 73 m² | £265,000 (2019) |
| 9, Portland Avenue, Gravesend | Freehold | 73 m² | £267,500 (2018) |
| 10 Portland Avenue, Gravesend | Freehold | 81 m² | £317,000 (2024) |
| 11, Portland Avenue, Gravesend | Freehold | 84 m² | £272,000 (2025) |
| 12 Portland Avenue, Gravesend | Freehold | 83 m² | £300,000 (2025) |
| 13, Portland Avenue, Gravesend | Freehold | 88 m² | £285,000 (2021) |
| 14, Portland Avenue, Gravesend | Freehold | 81 m² | £241,000 (2020) |
| 15, Portland Avenue, Gravesend | Freehold | 79 m² | £125,000 (2016) |
| 16 Portland Avenue, Gravesend | Freehold | 79 m² | £305,000 (2022) |
| 17, Portland Avenue, Gravesend | Freehold | 96 m² | £161,000 (2007) |
| 18, Portland Avenue, Gravesend | Freehold | 80 m² | £38,500 (1995) |
| 19, Portland Avenue, Gravesend | Freehold | 73 m² | £268,500 (2021) |
| 20, Portland Avenue, Gravesend | - | 78 m² | - |
| 25 Portland Avenue, Gravesend | Freehold | 78 m² | £310,000 (2023) |
| 26, Portland Avenue, Gravesend | - | 82 m² | - |
| 27 Portland Avenue, Gravesend | Freehold | 74 m² | £235,000 (2021) |
| 28, Portland Avenue, Gravesend | Freehold | 84 m² | £285,000 (2016) |
| 29 Portland Avenue, Gravesend | Freehold | 88 m² | £243,000 (2018) |
| 30 Portland Avenue, Gravesend, Gravesend | Freehold | 81 m² | £281,000 (2021) |
| 31, Portland Avenue, Gravesend | Freehold | 82 m² | £275,000 (2019) |
| 33, Portland Avenue, Gravesend | Freehold | 89 m² | £290,000 (2018) |
| 34, Portland Avenue, Gravesend | Freehold | 68 m² | £143,000 (2011) |
| 35, Portland Avenue, Gravesend | Freehold | 78 m² | £325,000 (2025) |
| 36 Portland Avenue, Gravesend, Gravesend | Freehold | 83 m² | £157,000 (2006) |
| 38, Portland Avenue, Gravesend | Freehold | 81 m² | £260,000 (2020) |
| 41, Portland Avenue, Gravesend | Freehold | 94 m² | £260,000 (2017) |
| 42 Portland Avenue, Gravesend, Gravesend | Freehold | 79 m² | £128,000 (2002) |
| 43, Portland Avenue, Gravesend | Freehold | 80 m² | £128,500 (2002) |