According to data from HM Land Registry, 123, Old Castle Road, Llanelli sits on a plot of 134 m².

We have plot size data on 36 out of 44 other houses in the postcode and 123, Old Castle Road, Llanelli sits on the 11th largest plot.

123, Old Castle Road, Llanelli has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 28 Feb 2023.

The property is connected to mains gas and has fully double glazed windows. It is heated using a boiler and radiators (mains gas).

According to HM Land Registry, 123, Old Castle Road, Llanelli was last sold on 18th August 2023 for £70,000 and was recorded as a freehold house.

The property has had 2 sales since 1995.

Since August 2023, the market for similar properties has risen by 35.2%.

• Sold Aug 2023£70,000
• Sold Dec 2000£29,000

According to the Land Registry and our network of Estate Agents, there have been 233 sales of properties similar to 123, Old Castle Road, Llanelli within a radius of 590 metres since 2017.

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

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£125,000 | 4 Bed House21, Princess Street, Llanelli, SA15 2TB21, Princess Street, Llanelli, SA15 2TB
• 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 Jan 2024£150,000 | 3 Bed House5, High Street, Llanelli, SA15 2RF5, High Street, Llanelli, SA15 2RF
• Sold Dec 2023£120,000 | 3 Bed House49, Brynmor Road, Llanelli, SA15 2TF49, Brynmor Road, Llanelli, SA15 2TF
• 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 Sep 2022£97,000 | 3 Bed House103, Old Castle Road, Llanelli, SA15 2SN103, Old Castle Road, Llanelli, SA15 2SN
• Sold Jul 2022£140,000 | 3 Bed House91, Brynmor Road, Llanelli, SA15 2TF91, Brynmor Road, Llanelli, SA15 2TF
• Sold Oct 2020£155,000 | 3 Bed House59, Albert Street, Llanelli, SA15 2SY59, Albert Street, Llanelli, SA15 2SY
• Sold Apr 2019£80,000 | 3 Bed House4, Princess Street, Llanelli, SA15 2TD4, Princess Street, Llanelli, SA15 2TD
• Sold May 2018£106,000 | 3 Bed House129, Old Castle Road, Llanelli, SA15 2SN129, Old Castle Road, Llanelli, SA15 2SN
• Sold Jul 2017£90,000 | 3 Bed House120, Old Castle Road, Llanelli, SA15 2SN120, Old Castle Road, Llanelli, SA15 2SN

Old Castle Road, Llanelli, SA15 has a total of 99 addresses. According to our analysis of all the public data, 123, Old Castle Road, Llanelli is the 7th largest and the 37th most expensive property on the street.

When compared to the postcode district it is £50k less expensive than the average property in SA15.

• Llanelli

  |

  800 m away
• Bynea

  |

  4.8 km away
• Pembrey & Burry Port

  |

  5.6 km away

According to data from the Environment Agency, the flood risk in this area is considered to be Very Low.