According to data from HM Land Registry, 21, Downing Street, Llanelli sits on a plot of 115 m².

We have plot size data on 24 out of 26 other houses in the postcode and 21, Downing Street, Llanelli sits on the 10th largest plot.

21, Downing Street, Llanelli has an Energy Performance Rating (EPC) of C. This is based on the most recent assessment, dated 17 Apr 2024.

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, 21, Downing Street, Llanelli was last sold on 23rd January 2004 for £67,800 and was recorded as a freehold house.

The property has only had this single sale since 1995.

• Sold Jan 2004£67,800

According to the Land Registry and our network of Estate Agents, there have been 267 sales of properties similar to 21, Downing Street, Llanelli within a radius of 470 metres since 2020.

The most recent example is 36, Princess Street, Llanelli, SA15 2TD, a freehold house which sold for £127,000 on the 23rd January 2026.

Read more about house prices in SA15.

• Sold Jan 2026£127,000 | 3 Bed House36, Princess Street, Llanelli, SA15 2TD36, Princess Street, Llanelli, SA15 2TD
• Sold Dec 2025£95,000 | 3 Bed House15, Ralph Terrace, Llanelli, SA15 2UB15, Ralph Terrace, Llanelli, SA15 2UB
• Sold Oct 2025£114,500 | 3 Bed House47, Ralph Terrace, Llanelli, SA15 2UB47, Ralph Terrace, Llanelli, SA15 2UB
• Sold Sep 2025£126,750 | 3 Bed House9, Lakefield Road, Llanelli, SA15 2UE9, Lakefield Road, Llanelli, SA15 2UE
• Sold Jul 2025£152,500 | 3 Bed House8, Amos Street, Llanelli, SA15 2TU8, Amos Street, Llanelli, SA15 2TU
• Sold Jun 2025£133,000 | 3 Bed House17, Brynmor Road, Llanelli, SA15 2TF17, Brynmor Road, Llanelli, SA15 2TF
• Sold Apr 2025£123,000 | 3 Bed House11, Ralph Terrace, Llanelli, SA15 2UB11, Ralph Terrace, Llanelli, SA15 2UB
• Sold Mar 2025£140,000 | 3 Bed House81, Brynmor Road, Llanelli, SA15 2TF81, Brynmor Road, Llanelli, SA15 2TF
• Sold Mar 2025£73,000 | 3 Bed House18, High Street, Llanelli, SA15 2RE18, High Street, Llanelli, SA15 2RE
• Sold Feb 2025£66,000 | 3 Bed House99, Brynmor Road, Llanelli, SA15 2TF99, Brynmor Road, Llanelli, SA15 2TF
• Sold Aug 2024£100,000 | 3 Bed House53, Brynmor Road, Llanelli, SA15 2TF53, Brynmor Road, Llanelli, SA15 2TF
• Sold Aug 2024£80,000 | 3 Bed House10, Amos Street, Llanelli, SA15 2TU10, Amos Street, Llanelli, SA15 2TU
• Sold Aug 2024£145,000 | 3 Bed House26, Downing Street, Llanelli, SA15 2UA26, Downing Street, Llanelli, SA15 2UA
• Sold Jul 2024£109,000 | 3 Bed House3, Amos Street, Llanelli, SA15 2TU3, Amos Street, Llanelli, SA15 2TU
• Sold May 2024£119,500 | 3 Bed House1, Downing Street, Llanelli, SA15 2UA1, Downing Street, Llanelli, SA15 2UA
• Sold Jun 2023£137,000 | 3 Bed House65, Brynmor Road, Llanelli, SA15 2TF65, Brynmor Road, Llanelli, SA15 2TF
• Sold Jun 2023£153,500 | 3 Bed House9, Downing Street, Llanelli, SA15 2UA9, Downing Street, Llanelli, SA15 2UA
• Sold Apr 2023£125,000 | 3 Bed House23, Downing Street, Llanelli, SA15 2UA23, Downing Street, Llanelli, SA15 2UA
• Sold Oct 2021£122,500 | 3 Bed House47, Pemberton Street, Llanelli, SA15 2RB47, Pemberton Street, Llanelli, SA15 2RB
• Sold Jul 2020£81,000 | 3 Bed House7, Downing Street, Llanelli, SA15 2UA7, Downing Street, Llanelli, SA15 2UA

Downing Street, Llanelli, SA15 has a total of 26 addresses. According to our analysis of all the public data, 21, Downing Street, Llanelli is the 20th largest and the 20th most expensive property on the street.

When compared to the postcode district it is £62k less expensive than the average property in SA15.

• Llanelli

  |

  500 m away
• Bynea

  |

  4.6 km away
• Pembrey & Burry Port

  |

  5.8 km away

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