Our Data Sources
Llanwern, Carmarthen has 2 entries in the Land Registry , most recently in September 2025 and a single entry in the EPC database dated February 2023.
We combine this information with that of neighbouring properties to estimate the property attributes and values.
The local information is scored as 2 out of 5 and is considered of medium accuracy.
Price Range & Condition
In very good condition, we estimate Llanwern, Carmarthen would be worth £384,314, with a potential rental value of £1,489 per month.
If substantial cosmetic improvements are needed, the estimated sale value falls to £340,392, with a rental value of £1,319 per month.
The extent to which decoration affects a property's value depends on its type, size and location.
Plot Size
Llanwern, Carmarthen occupies a 445 m2 plot as recorded by HM Land Registry.
All 23 other houses in this postcode have recorded plot sizes, and this one ranks as the 3rd largest.
Energy Efficiency
Llanwern, Carmarthen has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 20 Feb 2023.
The property is connected to mains gas and has single glazed windows. It is heated using Boiler and radiators, mains gas.
Sold Prices
Llanwern, Carmarthen last changed hands on 5th September 2025, selling for £410,000. The transaction was logged as a freehold house by HM Land Registry.
In total it has sold twice since 1995.
The market for similar properties has risen by 6.6% since September 2025.
- Sold Sep 2025£410,000
- Sold Apr 2023£293,000
Similar Properties Sold Nearby
Land Registry records and our Estate Agent network show 45 sales of comparable properties within 560 metres of Llanwern, Carmarthen across the last 2 years.
Most recently, 18, Picton Terrace, Carmarthen, SA31 3BX, a freehold house, sold at £409,000 on the 1st July 2024.
Read more about house prices in SA31.
- Sold Jul 2024£409,000 | 4 Bed House18, Picton Terrace, Carmarthen, SA31 3BX18, Picton Terrace, Carmarthen, SA31 3BX
- Sold Dec 2023£285,000 | 4 Bed HouseParc-Y-Ddol, College Road, Carmarthen, SA31 3EFParc-Y-Ddol, College Road, Carmarthen, SA31 3EF
- Sold Sep 2018£208,000 | 4 Bed House8, St. Nons Avenue, Carmarthen, SA31 3DJ8, St. Nons Avenue, Carmarthen, SA31 3DJ
•Nearby is defined as the radius comprising the nearest 2,000 addresses.
More reading links
Location Comparison
Our analysis of the public data ranks Llanwern, Carmarthen as the 12th largest and the most expensive of the 45 addresses on St. Davids Avenue, Carmarthen, SA31.
Against the SA31 postcode district average, it is £120k more expensive than the typical property.
More reading links
Schools Nearby
Public Transport Nearby
- Carmarthen|900 m away
- Ferryside|10.6 km away
- Kidwelly|13.8 km away
Available Internet Speeds
Ofcom's latest figures show superfast broadband available in this area.
According to recent data from Ofcom, Superfast Broadband is available in the area.
Risk of Flooding
Environment Agency data suggests this area has a Very Low risk of flooding.
