| 1 Pen Y Graig Terrace, Old Llanfair Road, Harlech | Freehold | 56 m² | £163,500 (2017) |
| 2 Pen Y Graig Terrace, Old Llanfair Road, Harlech | Freehold | 58 m² | £128,000 (2014) |
| 3 Pen Y Graig Terrace, Ffordd Uchaf, Harlech, Harlech | Freehold | 50 m² | £44,000 (2000) |
| 5 Pen Y Graig Terrace, Old Llanfair Road, Harlech | Freehold | 57 m² | £160,000 (2013) |
| Beaumont, Old Llanfair Road, Harlech | Freehold | 85 m² | £175,000 (2019) |
| Brig Y Don, Old Llanfair Road, Harlech | - | 143 m² | - |
| Bron Y Garth, Old Llanfair Road, Harlech | - | 116 m² | - |
| Bronwylfa, Old Llanfair Road, Harlech | Freehold | 111 m² | £270,000 (2025) |
| Bryn Gwylan, Old Llanfair Road, Harlech | Freehold | 165 m² | £370,000 (2017) |
| Bryn Siriol, Old Llanfair Road, Harlech | Freehold | 73 m² | £345,000 (2023) |
| Buckland, Old Llanfair Road, Harlech | Freehold | 84 m² | £475,000 (2022) |
| Craig Y Don, Old Llanfair Road, Harlech | Freehold | 168 m² | £330,000 (2019) |
| Crud Yr Awel, Old Llanfair Road, Harlech | Freehold | 106 m² | £340,000 (2010) |
| Dolaur, Old Llanfair Road, Harlech | Freehold | 153 m² | £241,000 (2013) |
| Drws Y Coed, Old Llanfair Road, Harlech | Freehold | 90 m² | £350,000 (2023) |
| Eithinog, Old Llanfair Road, Harlech | - | 243 m² | - |
| Eryl Meirion, Old Llanfair Road, Harlech | Freehold | 237 m² | £470,000 (2016) |
| Eryl Y Don, Old Llanfair Road, Harlech | Freehold | 187 m² | £250,000 (2015) |
| Glas Annedd, Old Llanfair Road, Harlech | Freehold | 130 m² | £350,000 (2024) |
| Golygfa Hyfryd, Old Llanfair Road, Harlech | Freehold | 103 m² | £404,000 (2025) |
| Gwynt Y Mor, Old Llanfair Road, Harlech | Freehold | 152 m² | £275,000 (2006) |
| Hafod Y Bryn, Old Llanfair Road, Harlech | Freehold | 109 m² | £94,000 (2000) |
| Hafod, Old Llanfair Road, Harlech | Freehold | 109 m² | £222,000 (2019) |
| Haulfryn, Old Llanfair Road, Harlech | Freehold | 83 m² | £450,000 (2022) |
| Hendre Mur, Old Llanfair Road, Harlech | Freehold | 141 m² | £520,000 (2018) |
| Hill Cottage, Old Llanfair Road, Harlech | Freehold | 50 m² | £210,000 (2020) |
| Kiltan, Old Llanfair Road, Harlech | Freehold | 158 m² | £300,000 (2014) |
| Mon Dirion, Old Llanfair Road, Harlech | Freehold | 167 m² | £440,000 (2026) |
| Morlun, Old Llanfair Road, Harlech | Freehold | 254 m² | £581,000 (2022) |
| Mynydd A Mor, Old Llanfair Road, Harlech | Freehold | 121 m² | £385,000 (2021) |
| Orielfan, Old Llanfair Road, Harlech | - | 161 m² | - |
| Pen Cerrig Pellaf, Ffordd Uchaf, Harlech, Harlech | - | 151 m² | - |
| Prysg Melyn, Old Llanfair Road, Harlech | - | 124 m² | - |
| Simdda Wen, Old Llanfair Road, Harlech | Freehold | 178 m² | £350,000 (2018) |
| Swn Y Don, Old Llanfair Road, Harlech | Freehold | 61 m² | £237,250 (2013) |
| Tan Y Garth, Old Llanfair Road, Harlech | Freehold | 103 m² | £275,000 (2018) |
| Tirionfa, Old Llanfair Road, Harlech | Freehold | 133 m² | £150,000 (2003) |
| Trem Eifion, Old Llanfair Road, Harlech | Freehold | 91 m² | £186,000 (2018) |
| Tremorthin, Old Llanfair Road, Harlech | - | 94 m² | - |
| Ty Mor, Old Llanfair Road, Harlech | Freehold | 121 m² | £69,000 (1996) |
| Ty Tarren, Old Llanfair Road, Harlech | Freehold | 318 m² | £55,000 (2002) |
| Wynd Cote, Old Llanfair Road, Harlech | - | 62 m² | - |
