| 1A, Pipers Avenue, Harpenden | Freehold | 80 m² | £590,000 (2010) |
| 2B, Pipers Avenue, Harpenden | Freehold | 176 m² | £868,000 (2020) |
| 3 Pipers Avenue, Harpenden | Freehold | 187 m² | £740,000 (2013) |
| 4 Pipers Avenue, Harpenden, Harpenden | Freehold | 130 m² | £422,500 (2011) |
| 5, Pipers Avenue, Harpenden | Freehold | 193 m² | £900,000 (2016) |
| 5A Pipers Avenue, Harpenden | Freehold | 193 m² | £885,000 (2015) |
| 6, Pipers Avenue, Harpenden | Freehold | 128 m² | £790,000 (2017) |
| 9, Pipers Avenue, Harpenden | Freehold | 212 m² | £499,950 (2007) |
| 10 Pipers Avenue, Harpenden | Freehold | 120 m² | £517,550 (2013) |
| 11, Pipers Avenue, Harpenden | Freehold | 169 m² | £679,000 (2012) |
| 12, Pipers Avenue, Harpenden | Freehold | 87 m² | £430,000 (2013) |
| 13 Pipers Avenue, Harpenden | Freehold | 169 m² | £646,000 (2012) |
| 15, Pipers Avenue, Harpenden | Freehold | 169 m² | £650,000 (2012) |
| 15A Pipers Avenue, Harpenden | Freehold | 167 m² | £837,250 (2024) |
| 16 Pipers Avenue, Harpenden | Freehold | 132 m² | £825,000 (2024) |
| 17, Pipers Avenue, Harpenden | Freehold | 244 m² | £595,000 (2009) |
| 18, Pipers Avenue, Harpenden | Freehold | 108 m² | £680,000 (2018) |
| 22 Pipers Avenue, Harpenden | - | 117 m² | - |
| 24 Pipers Avenue, Harpenden, Harpenden | Freehold | 153 m² | £905,000 (2021) |
| 26, Pipers Avenue, Harpenden | Freehold | 128 m² | £249,950 (2002) |
| 27, Pipers Avenue, Harpenden | - | 98 m² | - |
| 28, Pipers Avenue, Harpenden | Freehold | 92 m² | £582,550 (2017) |
| 29 Pipers Avenue, Harpenden | - | 94 m² | - |
| 33 Pipers Avenue, Harpenden, Harpenden | - | 85 m² | - |
| 38, Pipers Avenue, Harpenden | Freehold | 129 m² | £670,000 (2021) |