21, Carmarthen occupies a 367 m² plot as recorded by HM Land Registry.

Of the 17 other houses in this postcode, 13 have recorded plot sizes, and this one ranks as the 7th largest.

21, Carmarthen has an Energy Performance Rating (EPC) of E. This is based on the most recent assessment, dated 04 Sep 2023.

The property is not connected to mains gas and has fully double glazed windows. It is heated using a boiler and radiators (oil).

21, Carmarthen last changed hands on 17th December 2025, selling for £225,000. The transaction was logged as a freehold house by HM Land Registry.

In total it has sold 4 times since 1995.

The market for similar properties has dropped by 17.5% since December 2025.

• Sold Dec 2025£225,000
• Sold Dec 2006£165,000
• Sold May 2004£159,995

Land Registry records and our Estate Agent network show 84 sales of comparable properties within 4.3 kilometres of 21, Carmarthen since 2008.

Most recently, 2, Ismyrddin, Carmarthen, SA31 2JE, a freehold house, sold at £210,000 on the 22nd May 2026.

Read more about house prices in SA32.

• Sold May 2026£210,000 | 3 Bed House2, Ismyrddin, Carmarthen, SA31 2JE2, Ismyrddin, Carmarthen, SA31 2JE
• Sold Feb 2026£190,000 | 3 Bed House45, Glynderi, Carmarthen, SA31 2EX45, Glynderi, Carmarthen, SA31 2EX
• Sold Jan 2026£220,000 | 3 Bed House39, Glynderi, Carmarthen, SA31 2EX39, Glynderi, Carmarthen, SA31 2EX
• Sold Aug 2025£240,000 | 3 Bed HouseRhyd Adlais, Carmarthen, SA32 8ADRhyd Adlais, Carmarthen, SA32 8AD
• Sold Apr 2025£227,500 | 3 Bed House35, Abergwili Road, Carmarthen, SA31 2HQ35, Abergwili Road, Carmarthen, SA31 2HQ
• Sold Dec 2024£190,000 | 3 Bed House22, Hafod Cwnin, Carmarthen, SA31 2AT22, Hafod Cwnin, Carmarthen, SA31 2AT
• Sold Nov 2024£175,000 | 3 Bed House4, Hafod Cwnin, Carmarthen, SA31 2AU4, Hafod Cwnin, Carmarthen, SA31 2AU
• Sold Jun 2024£225,000 | 3 Bed HouseBrynhyfryd, Carmarthen, SA32 8HEBrynhyfryd, Carmarthen, SA32 8HE
• Sold Feb 2024£185,000 | 3 Bed House56, Hafod Cwnin, Carmarthen, SA31 2AT56, Hafod Cwnin, Carmarthen, SA31 2AT
• Sold Dec 2023£225,000 | 3 Bed House8, Ismyrddin, Carmarthen, SA31 2JE8, Ismyrddin, Carmarthen, SA31 2JE
• Sold Aug 2022£318,000 | 3 Bed House96, Abergwili Road, Carmarthen, SA31 2HJ96, Abergwili Road, Carmarthen, SA31 2HJ
• Sold Mar 2022£170,000 | 3 Bed House4, Ismyrddin, Carmarthen, SA31 2JE4, Ismyrddin, Carmarthen, SA31 2JE
• Sold Oct 2021£230,000 | 3 Bed House6B, Ismyrddin, Carmarthen, SA31 2JE6B, Ismyrddin, Carmarthen, SA31 2JE
• Sold May 2021£228,000 | 3 Bed House6A, Ismyrddin, Carmarthen, SA31 2JE6A, Ismyrddin, Carmarthen, SA31 2JE
• Sold Feb 2021£150,000 | 3 Bed House2 Manor Afon, Carmarthen, SA31 2JL2 Manor Afon, Carmarthen, SA31 2JL
• Sold Jul 2019£115,000 | 3 Bed House6, Lloyds Terrace, Carmarthen, SA31 2JP6, Lloyds Terrace, Carmarthen, SA31 2JP
• Sold Jul 2019£168,500 | 3 Bed House11, Ismyrddin, Carmarthen, SA31 2JE11, Ismyrddin, Carmarthen, SA31 2JE
• Sold Feb 2014£118,500 | 3 Bed House1, Ismyrddin, Carmarthen, SA31 2JE1, Ismyrddin, Carmarthen, SA31 2JE
• Sold Jun 2013£110,000 | 3 Bed House16, Carmarthen, SA32 7EN16, Carmarthen, SA32 7EN
• Sold Apr 2008£137,000 | 3 Bed House10, Carmarthen, SA32 7EN10, Carmarthen, SA32 7EN

Our analysis of the public data ranks 21, Carmarthen as the 86th largest and the 86th most expensive of the 115 addresses on Whitemill, Carmarthen, SA32.

Against the SA32 postcode district average, it is £44k less expensive than the typical property.

• Carmarthen

  |

  5.4 km away
• Ferryside

  |

  14.7 km away
• Kidwelly

  |

  16.2 km away

Environment Agency data suggests this area has a Very Low risk of flooding.