Our Data Sources
Derlwyn Isaf, Carmarthen has 31 entries in the Land Registry , most recently in November 2025 and a single entry in the EPC database dated May 2025.
We combine this information with that of neighbouring properties to estimate the property attributes and values.
The local information is scored as 3 out of 5 and is considered of medium accuracy.
Price Range & Condition
In very good condition, we estimate Derlwyn Isaf, Carmarthen would be worth £355,601, with a potential rental value of £1,449 per month.
If substantial cosmetic improvements are needed, the estimated sale value falls to £314,960, with a rental value of £1,283 per month.
The extent to which decoration affects a property's value depends on its type, size and location.
Plot Size
Derlwyn Isaf, Carmarthen occupies a 793 m2 plot as recorded by HM Land Registry.
Of the 22 other houses in this postcode, 17 have recorded plot sizes, and this one ranks as the 11th largest.
Energy Efficiency
Derlwyn Isaf, Carmarthen has an Energy Performance Rating (EPC) of C. This is based on the most recent assessment, dated 13 May 2025.
The property is not connected to mains gas and has fully double glazed windows. It is heated using Boiler and radiators, oil.
Sold Prices
Derlwyn Isaf, Carmarthen last changed hands on 10th November 2025, selling for £348,000. 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 dropped by 7.1% since November 2025.
- Sold Nov 2025£348,000
- Sold Jun 2016£225,000
- Sold Oct 2005£195,000
Similar Properties Sold Nearby
Land Registry records and our Estate Agent network show 84 sales of comparable properties within 7.9 kilometres of Derlwyn Isaf, Carmarthen across the last 2 years.
Most recently, Pleasant View, Carmarthen, SA33 6ET, a freehold house, sold at £200,000 on the 8th September 2023.
Read more about house prices in SA33.
- Sold Sep 2023£200,000 | 4 Bed HousePleasant View, Carmarthen, SA33 6ETPleasant View, Carmarthen, SA33 6ET
- Sold Mar 2021£378,000 | 4 Bed HouseMountain View, Carmarthen, SA33 6ESMountain View, Carmarthen, SA33 6ES
- Sold Dec 2016£230,000 | 4 Bed HouseBrongwyn, Carmarthen, SA33 6ETBrongwyn, Carmarthen, SA33 6ET
•Nearby is defined as the radius comprising the nearest 2,000 addresses.
More reading links
Location Comparison
Our analysis of the public data ranks Derlwyn Isaf, Carmarthen as the 40th largest and the 34th most expensive of the 61 addresses on Blaenycoed, Carmarthen, SA33.
Against the SA33 postcode district average, it is £93k more expensive than the typical property.
More reading links
Schools Nearby
Public Transport Nearby
- Carmarthen|9.8 km away
- Ferryside|16.8 km away
- Whitland|18.2 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.
