Our Data Sources
21, Heol Dderwen, Llanelli has no records in the Land Registry and a single entry in the EPC database dated May 2021.
We combine this information with public data of neighbouring properties to estimate the property attributes and values.
The local information is scored as 5 out of 5 and is considered of high accuracy.
Price Range & Condition
In very good condition, we estimate 21, Heol Dderwen, Llanelli would be worth £145,083, with a potential rental value of £884 per month.
If substantial cosmetic improvements are needed, the estimated sale value falls to £128,502, with a rental value of £783 per month.
The extent to which decoration affects a property's value depends on its type, size and location.
Plot Size
21, Heol Dderwen, Llanelli occupies a 196 m2 plot as recorded by HM Land Registry.
All 30 other houses in this postcode have recorded plot sizes, and this one ranks as the 28th largest.
Energy Efficiency
21, Heol Dderwen, Llanelli has an Energy Performance Rating (EPC) of C. This is based on the most recent assessment, dated 10 May 2021.
The property is connected to mains gas and has fully double glazed windows. It is heated using a boiler and radiators (mains gas).
Similar Properties Sold Nearby
Land Registry records and our Estate Agent network show 192 sales of comparable properties within 660 metres of 21, Heol Dderwen, Llanelli since 2018.
Most recently, 85, Penyfan Road, Llanelli, SA15 1JG, a freehold house, sold at £144,000 on the 8th May 2026.
Read more about house prices in SA15.
- Sold May 2026£144,000 | 3 Bed House85, Penyfan Road, Llanelli, SA15 1JG85, Penyfan Road, Llanelli, SA15 1JG
- Sold Jan 2026£133,500 | 3 Bed House58, Penyfan Road, Llanelli, SA15 1JP58, Penyfan Road, Llanelli, SA15 1JP
- Sold Oct 2025£125,000 | 3 Bed House15, Gorsedd, Llanelli, SA15 1JL15, Gorsedd, Llanelli, SA15 1JL
- Sold Aug 2025£136,000 | 3 Bed House22, Heol Dderwen, Llanelli, SA15 1JQ22, Heol Dderwen, Llanelli, SA15 1JQ
- Sold Jul 2025£129,995 | 3 Bed House69, Firth Road, Llanelli, SA15 1PN69, Firth Road, Llanelli, SA15 1PN
Nearby is defined as the radius comprising the nearest 2,000 addresses.
More reading links
Explore Nearby Properties
The surrounding properties have an average estimated value of £143,791, ranging from £138,174 to £154,731.
- 22 Heol Dderwen
3 Bed House | 7 m | Est. Value: £147,541
- 20 Heol Dderwen
3 Bed House | 9 m | Est. Value: £154,731
- 23 Heol Dderwen
3 Bed House | 15 m | Est. Value: £138,174
- 24 Heol Dderwen
3 Bed House | 22 m | Est. Value: £138,174
- 10 Trostre Road
3 Bed House | 27 m | Est. Value: £147,359
Location Comparison
Our analysis of the public data ranks 21, Heol Dderwen, Llanelli as the 23rd largest and the 25th most expensive of the 30 addresses on Heol Dderwen, Llanelli, SA15.
Against the SA15 postcode district average, it is £55k less expensive than the typical property.
More reading links
Schools Nearby
Public Transport Nearby
- Llanelli|1.2 km away
- Bynea|3.3 km away
- Llangennech|4.8 km away
Available Internet Speeds
Ofcom's latest figures show superfast broadband available in this area.
According to recent data from Ofcom, Superfast Broadband available in this area.
Risk of Flooding
Environment Agency data suggests this area has a Very Low risk of flooding.
