| 43, Portman Street, Middlesbrough | Freehold | 72 m² | £43,000 (2010) |
| 45, Portman Street, Middlesbrough | Freehold | 61 m² | £63,000 (2024) |
| 46 Portman Street, Middlesbrough | Freehold | 55 m² | £42,000 (2017) |
| 47 Portman Street, Middlesbrough | Freehold | 62 m² | £64,000 (2022) |
| 48 Portman Street, Middlesbrough | Freehold | 64 m² | £30,000 (2021) |
| 49 Portman Street, Middlesbrough, Middlesbrough | Freehold | 62 m² | £39,999 (2021) |
| 50, Portman Street, Middlesbrough | Freehold | 64 m² | £12,000 (2003) |
| 51 Portman Street, Middlesbrough | Freehold | 60 m² | £52,500 (2016) |
| 52, Portman Street, Middlesbrough | Freehold | 64 m² | £14,000 (2002) |
| 53, Portman Street, Middlesbrough | Freehold | 63 m² | £16,000 (1995) |
| 54 Portman Street, Middlesbrough | Freehold | 63 m² | £57,000 (2018) |
| 55, Portman Street, Middlesbrough | Freehold | 80 m² | £50,000 (2010) |
| 56, Portman Street, Middlesbrough | Freehold | 66 m² | £32,000 (2019) |
| 57, Portman Street, Middlesbrough | Freehold | 59 m² | £53,000 (2018) |
| 58 Portman Street, Middlesbrough | Freehold | 62 m² | £85,000 (2022) |
| 59, Portman Street, Middlesbrough | - | 63 m² | - |
| 60 Portman Street, Middlesbrough | Freehold | 65 m² | £58,000 (2023) |
| 61, Portman Street, Middlesbrough | Freehold | 64 m² | £25,500 (2002) |
| 62 Portman Street, Middlesbrough | Freehold | 63 m² | £60,000 (2020) |
| 63, Portman Street, Middlesbrough | Freehold | 62 m² | £55,000 (2024) |
| 64 Portman Street, Middlesbrough | Freehold | 66 m² | £90,750 (2024) |
| 66 Portman Street, Middlesbrough | Freehold | 62 m² | £65,000 (2025) |
| 67, Portman Street, Middlesbrough | Freehold | 62 m² | £87,500 (2022) |
| 68, Portman Street, Middlesbrough | Freehold | 65 m² | £78,000 (2026) |
| 69 Portman Street, Middlesbrough | Freehold | 62 m² | £52,000 (2005) |
| 70, Portman Street, Middlesbrough | Freehold | 68 m² | £56,000 (2009) |
| 71 Portman Street, Middlesbrough | Freehold | 60 m² | £65,000 (2025) |
| 72 Portman Street, Middlesbrough | Freehold | 65 m² | £49,000 (2013) |
| 73, Portman Street, Middlesbrough | Freehold | 60 m² | £39,400 (2020) |
| 74, Portman Street, Middlesbrough | Freehold | 66 m² | £55,000 (2010) |
| 75 Portman Street, Middlesbrough | Freehold | 62 m² | £51,000 (2005) |
| 76, Portman Street, Middlesbrough | Freehold | 64 m² | £20,500 (2003) |
| 77 Portman Street, Middlesbrough | Freehold | 61 m² | £28,000 (2003) |
| 78 Portman Street, Middlesbrough | - | 62 m² | - |
| 79 Portman Street, Middlesbrough | Freehold | 60 m² | £39,999 (2019) |
| 80 Portman Street, Middlesbrough | Freehold | 65 m² | £52,000 (2025) |
| 81 Portman Street, Middlesbrough | Freehold | 57 m² | £39,995 (2020) |
| 82 Portman Street, Middlesbrough | Freehold | 62 m² | £42,500 (2004) |
| 83, Portman Street, Middlesbrough | Freehold | 60 m² | £38,000 (2011) |
| 84 Portman Street, Middlesbrough, Middlesbrough | Freehold | 65 m² | £44,500 (2021) |
| 85 Portman Street, Middlesbrough | Freehold | 60 m² | £60,000 (2021) |
| 86, Portman Street, Middlesbrough | Freehold | 66 m² | £100,000 (2024) |
| 87, Portman Street, Middlesbrough | Freehold | 60 m² | £32,000 (2018) |
| 88, Portman Street, Middlesbrough | Freehold | 65 m² | £70,000 (2008) |
| 89 Portman Street, Middlesbrough | - | 61 m² | - |
| 90 Portman Street, Middlesbrough | Freehold | 64 m² | £45,000 (2021) |
| 91, Portman Street, Middlesbrough | Freehold | 61 m² | £52,500 (2020) |
| 92 Portman Street, Middlesbrough | Freehold | 58 m² | £61,000 (2007) |
| 93, Portman Street, Middlesbrough | Freehold | 62 m² | £50,000 (2015) |
| 94 Portman Street, Middlesbrough | Freehold | 56 m² | £42,500 (2018) |
| 95, Portman Street, Middlesbrough | Freehold | 58 m² | £48,000 (2004) |
| 96 Portman Street, Middlesbrough | Freehold | 64 m² | £87,000 (2024) |
| 97, Portman Street, Middlesbrough | - | 61 m² | - |
| 98 Portman Street, Middlesbrough | Freehold | 57 m² | £77,500 (2025) |