21, Denham Avenue, Llanelli occupies a 250 m² plot as recorded by HM Land Registry.

Of the 40 other houses in this postcode, 37 have recorded plot sizes, and this one ranks as the 30th largest.

21, Denham Avenue, Llanelli has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 30 Apr 2018.

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

21, Denham Avenue, Llanelli last changed hands on 11th October 2018, selling for £158,000. The transaction was logged as a freehold house by HM Land Registry.

In total it has sold 3 times since 1995.

The market for similar properties has risen by 36.2% since October 2018.

• Sold Oct 2018£158,000
• Sold Jan 2002£62,000
• Sold Sep 1995£42,000

Land Registry records and our Estate Agent network show 170 sales of comparable properties within 1.0 kilometres of 21, Denham Avenue, Llanelli since 2007.

Most recently, 40, Stryd Y Maswr, Llanelli, SA15 4DZ, a freehold house, sold at £245,000 on the 5th August 2025.

Read more about house prices in SA15.

• Sold Aug 2025£245,000 | 3 Bed House40, Stryd Y Maswr, Llanelli, SA15 4DZ40, Stryd Y Maswr, Llanelli, SA15 4DZ
• Sold May 2025£167,500 | 3 Bed House9, Denham Avenue, Llanelli, SA15 4DB9, Denham Avenue, Llanelli, SA15 4DB
• Sold Aug 2024£170,000 | 3 Bed House19, Denham Avenue, Llanelli, SA15 4DB19, Denham Avenue, Llanelli, SA15 4DB
• Sold Apr 2024£162,000 | 3 Bed House30, Chapman Street, Llanelli, SA15 3EB30, Chapman Street, Llanelli, SA15 3EB
• Sold Jan 2024£250,000 | 3 Bed House44, Denham Avenue, Llanelli, SA15 4DD44, Denham Avenue, Llanelli, SA15 4DD
• Sold Jan 2024£250,000 | 3 Bed House16, Denham Avenue, Llanelli, SA15 4DB16, Denham Avenue, Llanelli, SA15 4DB
• Sold Dec 2022£245,000 | 3 Bed House33, Denham Avenue, Llanelli, SA15 4DB33, Denham Avenue, Llanelli, SA15 4DB
• Sold May 2022£207,500 | 3 Bed House20, Denham Avenue, Llanelli, SA15 4DB20, Denham Avenue, Llanelli, SA15 4DB
• Sold May 2022£187,000 | 3 Bed House123, Stryd Bennett, Llanelli, SA15 4DJ123, Stryd Bennett, Llanelli, SA15 4DJ
• Sold Feb 2022£115,000 | 3 Bed House47, Denham Avenue, Llanelli, SA15 4DB47, Denham Avenue, Llanelli, SA15 4DB
• Sold Dec 2021£165,000 | 3 Bed House177, Stryd Bennett, Llanelli, SA15 4DQ177, Stryd Bennett, Llanelli, SA15 4DQ
• Sold Oct 2021£165,000 | 3 Bed House31, Denham Avenue, Llanelli, SA15 4DB31, Denham Avenue, Llanelli, SA15 4DB
• Sold Oct 2021£178,000 | 3 Bed House179, Stryd Bennett, Llanelli, SA15 4DQ179, Stryd Bennett, Llanelli, SA15 4DQ
• Sold Nov 2019£159,995 | 3 Bed House47, Stryd Bennett, Llanelli, SA15 4DJ47, Stryd Bennett, Llanelli, SA15 4DJ
• Sold Aug 2018£149,000 | 3 Bed House27, Denham Avenue, Llanelli, SA15 4DB27, Denham Avenue, Llanelli, SA15 4DB
• Sold Dec 2016£153,500 | 3 Bed House5, Denham Avenue, Llanelli, SA15 4DB5, Denham Avenue, Llanelli, SA15 4DB
• Sold Nov 2015£136,000 | 3 Bed House40, Denham Avenue, Llanelli, SA15 4DD40, Denham Avenue, Llanelli, SA15 4DD
• Sold Jul 2013£155,000 | 3 Bed House28, Denham Avenue, Llanelli, SA15 4DD28, Denham Avenue, Llanelli, SA15 4DD
• Sold Oct 2012£118,000 | 4 Bed House6, Denham Avenue, Llanelli, SA15 4DB6, Denham Avenue, Llanelli, SA15 4DB
• Sold Mar 2007£162,000 | 3 Bed House17, Denham Avenue, Llanelli, SA15 4DB17, Denham Avenue, Llanelli, SA15 4DB

Our analysis of the public data ranks 21, Denham Avenue, Llanelli as the 45th largest and the 77th most expensive of the 111 addresses on Denham Avenue, Llanelli, SA15.

Against the SA15 postcode district average, it is £25k more expensive than the typical property.

• Llanelli

  |

  1.9 km away
• Pembrey & Burry Port

  |

  4.7 km away
• Bynea

  |

  5.8 km away

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