| 1 St. James Court, Clarendon Road, Harpenden | Leasehold | 55 m² | £190,000 (2014) |
| 2, St. James Court, Clarendon Road, Harpenden | Leasehold | 51 m² | £70,000 (1997) |
| 3, St. James Court, Clarendon Road, Harpenden | Leasehold | 52 m² | £225,000 (2021) |
| 5 St. James Court, Clarendon Road, Harpenden | - | 53 m² | - |
| 6, St. James Court, Clarendon Road, Harpenden | Leasehold | 51 m² | £232,500 (2020) |
| 7 St James Court, Clarendon Road, Harpenden, Harpenden | Leasehold | 51 m² | £162,000 (2005) |
| 8 St. James Court, Clarendon Road, Harpenden | Leasehold | 52 m² | £266,000 (2024) |
| 9, St. James Court, Clarendon Road, Harpenden | Leasehold | 59 m² | £172,000 (2010) |
| 10 St. James Court, Clarendon Road, Harpenden | Leasehold | 53 m² | £265,000 (2024) |
| 11 St. James Court, Clarendon Road, Harpenden | Leasehold | 50 m² | £259,000 (2022) |
| 12 St. James Court, Clarendon Road, Harpenden | Leasehold | 47 m² | £29,135 (1999) |
| 13, St. James Court, Clarendon Road, Harpenden | Leasehold | 47 m² | £225,000 (2017) |
| 14 St. James Court, Clarendon Road, Harpenden | Leasehold | 44 m² | £245,000 (2025) |
| 15 St. James Court, Clarendon Road, Harpenden | Leasehold | 48 m² | £229,000 (2024) |
| 16, St. James Court, Clarendon Road, Harpenden | Leasehold | 46 m² | £140,000 (2010) |
| 17 St. James Court, Clarendon Road, Harpenden | Leasehold | 47 m² | £187,000 (2023) |
| 18 St James Court, Clarendon Road, Harpenden | Leasehold | 46 m² | £210,000 (2023) |
