| 5A, Mill Green Road, Welwyn Garden City | - | 54 m² | - |
| 9A Mill Green Road, Welwyn Garden City, Welwyn Garden City | Freehold | 54 m² | £365,000 (2025) |
| 11, Mill Green Road, Welwyn Garden City | Freehold | 53 m² | £186,750 (2010) |
| 17A, Mill Green Road, Welwyn Garden City | Freehold | 65 m² | £390,000 (2022) |
| 19A Mill Green Road, Welwyn Garden City | Freehold | 54 m² | £320,000 (2021) |
| 21, Mill Green Road, Welwyn Garden City | - | 54 m² | - |
| 21A Mill Green Road, Welwyn Garden City, Welwyn Garden City | Freehold | 54 m² | £140,000 (2003) |
| 23, Mill Green Road, Welwyn Garden City | Freehold | 44 m² | £146,000 (2005) |
| 23A, Mill Green Road, Welwyn Garden City | Freehold | 41 m² | £290,000 (2025) |
| 25 Mill Green Road, Welwyn Garden City | Freehold | 39 m² | £165,000 (2015) |
| 27, Mill Green Road, Welwyn Garden City | Freehold | 32 m² | £225,000 (2017) |
| 29, Mill Green Road, Welwyn Garden City | - | 41 m² | - |
| 31, Mill Green Road, Welwyn Garden City | Freehold | 40 m² | £245,000 (2020) |
| 33, Mill Green Road, Welwyn Garden City | Freehold | 53 m² | £140,000 (2009) |
| 35, Mill Green Road, Welwyn Garden City | Freehold | 35 m² | £153,000 (2007) |
| 37 Mill Green Road, Welwyn Garden City | - | 40 m² | - |
| 39 Mill Green Road, Welwyn Garden City | Freehold | 40 m² | £300,000 (2025) |
| 43, Mill Green Road, Welwyn Garden City | Leasehold | 101 m² | £37,500 (2002) |
| 45, Mill Green Road, Welwyn Garden City | Freehold | 84 m² | £411,000 (2023) |
| 47, Mill Green Road, Welwyn Garden City | Freehold | 80 m² | £203,000 (2009) |
| 49 Mill Green Road, Welwyn Garden City | - | 78 m² | - |
| 51 Mill Green Road, Welwyn Garden City | - | 73 m² | - |
| 53 Mill Green Road, Welwyn Garden City | - | 70 m² | - |
| 57, Mill Green Road, Welwyn Garden City | Freehold | 69 m² | £124,000 (2002) |
| 59 Mill Green Road, Welwyn Garden City | - | 76 m² | - |
| 61 Mill Green Road, Welwyn Garden City | - | 76 m² | - |
| 63 Mill Green Road, Welwyn Garden City | Freehold | 76 m² | £384,000 (2023) |
| 65, Mill Green Road, Welwyn Garden City | Freehold | 72 m² | £415,000 (2022) |
| 67 Mill Green Road, Welwyn Garden City | Freehold | 87 m² | £515,000 (2023) |
| 69 Mill Green Road, Welwyn Garden City | - | 70 m² | - |
| 73 Mill Green Road, Welwyn Garden City | - | 67 m² | - |
| 77 Mill Green Road, Welwyn Garden City | - | 71 m² | - |
