According to data from HM Land Registry, 13, Heol Seion, Llanelli sits on a plot of 443 m².

We have plot size data on 19 out of 23 other houses in the postcode and 13, Heol Seion, Llanelli sits on the 4th largest plot.

13, Heol Seion, Llanelli has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 15 Aug 2017.

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, 13, Heol Seion, Llanelli was last sold on 5th August 2019 for £114,000 and was recorded as a freehold house.

The property has only had this single sale since 1995.

Since August 2019, the market for similar properties has risen by 45.0%.

According to the Land Registry and our network of Estate Agents, there have been 87 sales of properties similar to 13, Heol Seion, Llanelli within a radius of 1.4 kilometres since 2010.

The most recent example is 18, Talywern, Llanelli, SA14 8UQ, a freehold house which sold for £202,000 on the 28th July 2025.

Read more about house prices in SA14.

• Sold Jul 2025£202,000 | 3 Bed House18, Talywern, Llanelli, SA14 8UQ18, Talywern, Llanelli, SA14 8UQ
• Sold Jun 2025£175,000 | 3 Bed House69, Hendre Park, Llanelli, SA14 8UR69, Hendre Park, Llanelli, SA14 8UR
• Sold Aug 2024£180,000 | 3 Bed House16, Heol Seion, Llanelli, SA14 8TZ16, Heol Seion, Llanelli, SA14 8TZ
• Sold Aug 2024£175,000 | 3 Bed House12, Heol Plas Isaf, Llanelli, SA14 8TJ12, Heol Plas Isaf, Llanelli, SA14 8TJ
• Sold Oct 2023£210,000 | 3 Bed House14, Talywern, Llanelli, SA14 8UQ14, Talywern, Llanelli, SA14 8UQ
• Sold Feb 2023£195,000 | 3 Bed House26, Heol Seion, Llanelli, SA14 8TZ26, Heol Seion, Llanelli, SA14 8TZ
• Sold Jan 2023£145,000 | 3 Bed House24, Heol Seion, Llanelli, SA14 8TZ24, Heol Seion, Llanelli, SA14 8TZ
• Sold May 2022£172,500 | 3 Bed House15, Heol Seion, Llanelli, SA14 8TZ15, Heol Seion, Llanelli, SA14 8TZ
• Sold Dec 2020£124,400 | 3 Bed House5, Heol Plas Isaf, Llanelli, SA14 8TJ5, Heol Plas Isaf, Llanelli, SA14 8TJ
• Sold Mar 2020£90,000 | 3 Bed House4, Clos Plas Isaf, Llanelli, SA14 8RX4, Clos Plas Isaf, Llanelli, SA14 8RX
• Sold Feb 2019£110,000 | 3 Bed House6, Heol Seion, Llanelli, SA14 8TZ6, Heol Seion, Llanelli, SA14 8TZ
• Sold Jun 2018£125,000 | 3 Bed House12, Clos Cae Fainc, Llanelli, SA14 8TQ12, Clos Cae Fainc, Llanelli, SA14 8TQ
• Sold May 2018£123,950 | 3 Bed House14, Heol Seion, Llanelli, SA14 8TZ14, Heol Seion, Llanelli, SA14 8TZ
• Sold Feb 2016£93,000 | 3 Bed House15, Heol Plas Isaf, Llanelli, SA14 8TJ15, Heol Plas Isaf, Llanelli, SA14 8TJ
• Sold Oct 2014£124,000 | 3 Bed House19, Heol Seion, Llanelli, SA14 8TZ19, Heol Seion, Llanelli, SA14 8TZ
• Sold May 2014£85,000 | 3 Bed House12, Heol Seion, Llanelli, SA14 8TZ12, Heol Seion, Llanelli, SA14 8TZ
• Sold Jan 2012£105,000 | 3 Bed House3, Heol Plas Isaf, Llanelli, SA14 8TJ3, Heol Plas Isaf, Llanelli, SA14 8TJ
• Sold Sep 2011£125,000 | 3 Bed House58, Hendre Road, Llanelli, SA14 8TX58, Hendre Road, Llanelli, SA14 8TX
• Sold Nov 2010£116,000 | 3 Bed House6, Heol Plas Isaf, Llanelli, SA14 8TJ6, Heol Plas Isaf, Llanelli, SA14 8TJ
• Sold Feb 2010£95,000 | 3 Bed House17, Heol Seion, Llanelli, SA14 8TZ17, Heol Seion, Llanelli, SA14 8TZ

Heol Seion, Llangennech, Llanelli, SA14 has a total of 23 addresses. According to our analysis of all the public data, 13, Heol Seion, Llanelli is the 11th largest and the 5th most expensive property on the street.

When compared to the postcode district it is £426 less expensive than the average property in SA14.

• Llangennech

  |

  500 m away
• Bynea

  |

  2.3 km away
• Pontarddulais

  |

  4.0 km away

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