| 1, Lon Y Plas, Johnstown, Carmarthen | Freehold | 100 m² | £270,000 (2023) |
| 2 Lon Y Plas, Johnstown, Carmarthen | Freehold | 102 m² | £315,000 (2024) |
| 3, Lon Y Plas, Johnstown, Carmarthen | Freehold | 101 m² | £222,500 (2021) |
| 6 Lon Y Plas, Johnstown, Carmarthen | - | 80 m² | - |
| 7, Lon Y Plas, Johnstown, Carmarthen | Freehold | 98 m² | £199,000 (2019) |
| 8 Lon Y Plas, Johnstown, Carmarthen | - | 88 m² | - |
| 9, Lon Y Plas, Johnstown, Carmarthen | Freehold | 99 m² | £195,000 (2018) |
| 11, Lon Y Plas, Johnstown, Carmarthen | Freehold | 89 m² | £148,000 (2016) |
| 13, Lon Y Plas, Johnstown, Carmarthen | Freehold | 86 m² | £209,950 (2016) |
| 14 Lon Y Plas, Johnstown, Carmarthen | Freehold | 113 m² | £285,000 (2024) |
| 16 Lon Y Plas, Johnstown, Carmarthen | Freehold | 67 m² | £172,000 (2021) |
| 17 Lon Y Plas, Johnstown, Carmarthen | Freehold | 76 m² | £68,000 (1998) |
| 19, Lon Y Plas, Johnstown, Carmarthen | - | 103 m² | - |
| 20 Lon Y Plas, Johnstown, Carmarthen, Carmarthen | Freehold | 65 m² | £125,000 (2012) |
| 21, Lon Y Plas, Johnstown, Carmarthen | - | 80 m² | - |
| 22, Lon Y Plas, Johnstown, Carmarthen | Freehold | 112 m² | £139,365 (2023) |
| 24 Lon Y Plas, Johnstown, Carmarthen | Freehold | 98 m² | £75,000 (2001) |
| 25 Lon Y Plas, Johnstown, Carmarthen | Freehold | 90 m² | £225,000 (2026) |
| 29, Lon Y Plas, Johnstown, Carmarthen | Freehold | 91 m² | £147,500 (2012) |
| 31 Lon Y Plas, Johnstown, Carmarthen | - | 91 m² | - |
| 34, Lon Y Plas, Johnstown, Carmarthen | Freehold | 98 m² | £170,000 (2017) |
| 36 Lon Y Plas, Johnstown, Carmarthen | Freehold | 82 m² | £235,000 (2026) |
