HM Land Registry records the plot of land for 21, Princess Street, Llanelli as measuring 134 m².

That makes it the 9th largest plot in the postcode, where 31 of the 34 other houses have recorded plot data.

21, Princess Street, Llanelli has an Energy Performance Rating (EPC) of C. This is based on the most recent assessment, dated 02 Jul 2025.

The property is connected to mains gas and has mostly double glazing. It is heated using a boiler and radiators (mains gas).

The most recent sale of 21, Princess Street, Llanelli completed on 31st July 2025 at £125,000 and was recorded by HM Land Registry as a freehold house.

Since 1995 this is the property's only sale.

Values of comparable properties have risen by 42.9% over the period since July 2025.

• Sold Jul 2025£125,000

Since 2019 142 properties similar to 21, Princess Street, Llanelli have sold within a radius of 550 metres, per the Land Registry and our network of Estate Agents.

The latest, on the 18th December 2025, was 59, Princess Street, Llanelli, SA15 2TB, a freehold house which sold for £110,000.

Read more about house prices in SA15.

• Sold Dec 2025£110,000 | 4 Bed House59, Princess Street, Llanelli, SA15 2TB59, Princess Street, Llanelli, SA15 2TB
• Sold Nov 2025£122,000 | 3 Bed House27, Brynmor Road, Llanelli, SA15 2TF27, Brynmor Road, Llanelli, SA15 2TF
• Sold Sep 2025£110,000 | 4 Bed House28, Albert Street, Llanelli, SA15 2TA28, Albert Street, Llanelli, SA15 2TA
• Sold Jul 2025£152,500 | 3 Bed House8, Amos Street, Llanelli, SA15 2TU8, Amos Street, Llanelli, SA15 2TU
• Sold Jun 2025£155,000 | 4 Bed House119, Old Castle Road, Llanelli, SA15 2SN119, Old Castle Road, Llanelli, SA15 2SN
• Sold May 2025£122,500 | 4 Bed House24, Albert Street, Llanelli, SA15 2TA24, Albert Street, Llanelli, SA15 2TA
• Sold Apr 2025£132,500 | 3 Bed House33, Old Castle Road, Llanelli, SA15 2SL33, Old Castle Road, Llanelli, SA15 2SL
• Sold Dec 2024£135,000 | 4 Bed House13, Princess Street, Llanelli, SA15 2TB13, Princess Street, Llanelli, SA15 2TB
• Sold Nov 2024£125,000 | 4 Bed House36, Albert Street, Llanelli, SA15 2TA36, Albert Street, Llanelli, SA15 2TA
• Sold Oct 2024£120,000 | 3 Bed House31, Princess Street, Llanelli, SA15 2TB31, Princess Street, Llanelli, SA15 2TB
• Sold Sep 2024£125,000 | 4 Bed House13, Lloyd Street, Llanelli, SA15 2PU13, Lloyd Street, Llanelli, SA15 2PU
• Sold Jul 2024£120,000 | 4 Bed House9, Lloyd Street, Llanelli, SA15 2PU9, Lloyd Street, Llanelli, SA15 2PU
• Sold Aug 2023£70,000 | 3 Bed House123, Old Castle Road, Llanelli, SA15 2SN123, Old Castle Road, Llanelli, SA15 2SN
• Sold Jun 2023£135,000 | 4 Bed House17, Lloyd Street, Llanelli, SA15 2PU17, Lloyd Street, Llanelli, SA15 2PU
• Sold Feb 2023£96,000 | 4 Bed House7, Lloyd Street, Llanelli, SA15 2PU7, Lloyd Street, Llanelli, SA15 2PU
• Sold Nov 2022£155,000 | 4 Bed House131, Old Castle Road, Llanelli, SA15 2SN131, Old Castle Road, Llanelli, SA15 2SN
• Sold Oct 2022£133,000 | 4 Bed House16, Princess Street, Llanelli, SA15 2TD16, Princess Street, Llanelli, SA15 2TD
• Sold Oct 2020£95,500 | 3 Bed House11, Princess Street, Llanelli, SA15 2TB11, Princess Street, Llanelli, SA15 2TB
• Sold Sep 2020£83,000 | 4 Bed House7, Princess Street, Llanelli, SA15 2TB7, Princess Street, Llanelli, SA15 2TB
• Sold Apr 2019£80,000 | 3 Bed House4, Princess Street, Llanelli, SA15 2TD4, Princess Street, Llanelli, SA15 2TD

Of the 83 addresses on Princess Street, Llanelli, SA15, 21, Princess Street, Llanelli comes out as the 12th largest and the 21st most expensive in our analysis of the public data.

It is also £60k less expensive than the average property across the SA15 district.

• Llanelli

  |

  700 m away
• Bynea

  |

  4.8 km away
• Pembrey & Burry Port

  |

  5.6 km away

The flood risk here is rated Very Low, based on Environment Agency data.