8 Dol Y Dderwen, Llangain, Carmarthen, SA33 5BE
About 8 Dol Y Dderwen
8 Dol Y Dderwen is a three-bedroom semi-detached house in Llangain, Carmarthen, Carmarthen (SA33 5BE). It has a recorded floor area of 78 m² (around 840 sq ft), construction records dating it to 2025 and council tax band E. The latest certificate (August 2025) returns an A (score 92), the top energy band on the EPC scale. When first surveyed in December 2022 the rating was C, the property has climbed 2 bands since. Between certificates, wall efficiency went from Good to Very Good and roof efficiency went from Good to Very Good; while lighting dropped from Very Good to Good and main heating dropped from Good to Average. Main heating runs on electricity: electricity, unspecified tariff.
Its energy rating outperforms most of the postcode (better than 77% of similar EPCs). On a £-per-square-foot basis, the last sale (£298/sq ft) was about 90.7% above the typical sold price in the postcode. Sold February 2023 for £250,000.
Know exactly what you're buying at 8 Dol Y Dderwen
Before you offer, see what the listing won't tell you, the true value, the red flags and the full history.
Already flagged here
Launch offer · save £5
Valuation
against the asking price
Risks
planning & flood
Sold prices
similar homes nearby
Trends
the local market
What this property has
Inside
- Bedrooms3
- Bathrooms2
Energy performance
8 Dol Y Dderwen's carbon output is low for the local stock.
EPC Rating
Property Improvements
Changes detected from historical EPC data
Heat pump installed, significantly improving energy efficiency
Changed to a more efficient fuel source
Heating controls upgraded for better temperature management
High performance glazing installed
Wall insulation improved
Roof insulation improved
Floor insulation added or improved
Planning history
8 Dol Y Dderwen has no planning applications on record.
Notable planning nearby
4applications of note in the surrounding area
We flagged 1 thing worth checking at 8 Dol Y Dderwen
Independent checks surfaced things a buyer would want to understand before offering. The report explains each one in full, with the underlying data and what to ask.
- Larger development activity nearby
30-day money-back guarantee
Sales history & valuation
8 Dol Y Dderwen valuation sits well clear of the typical sold price in this postcode.
£272,000
Modelled from EPC, postcode comparables.
£250,000
Recorded with HM Land Registry.
Sales timeline
17 February 2023Most recent
£250,000
Median price across the last 5 sales in SA33 5BE: £327,000 (2025–2022).
Nearby sales in SA33 5BE
25 Dol Y Dderwen, Llangain, Carmarthen, SA33 5BE
Sold Feb 2025
£240,00017 Dol Y Dderwen, Llangain, Carmarthen, SA33 5BE
Sold Sept 2024
£330,00053 Dol Y Dderwen, Llangain, Carmarthen, SA33 5BE
Sold Jul 2023
£327,00043 Dol Y Dderwen, Llangain, Carmarthen, SA33 5BE
Sold Oct 2022
£345,00031 Dol Y Dderwen, Llangain, Carmarthen, SA33 5BE
Sold Sept 2022
£285,000
Everything we know about 8 Dol Y Dderwen, in one report
What it's really worth, what could be wrong, and the planning, sales and area data in full.
What we flagged
- Larger development activity nearby

Versus other Dol Y Dderwen homes
Price per m² for 8 Dol Y Dderwen runs comfortably ahead of the street norm.
Price per m²
£3,205
Street avg £1,973
Floor Area
78 m²
Street avg 96 m²
CO₂ Emissions
0.1 t/year
Street avg 1.8 t/year
Years Held
3 years
Street avg 12 years
Similar properties nearby
1 Coedmor Avenue, Llangain
SA33 5AF
1 High Street, Bancyfelin
SA33 5ND
1 Blaenwaun, Meidrim
SA33 5PQ
1 Dol Y Dderwen, Llangain
SA33 5BE
1 Coomb Drive, Llangynog
SA33 5HR
1 Cwrt Melin, Bancyfelin
SA33 5NB
1 Brondeg Cottages, Llansteffan
SA33 5JJ
1 Llys Y Dderwen, School Road, Llangain
SA33 5AE
The neighbourhood at a glance
Crime
4/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
Capel Smyrna — bus stop.
Go deeper on the local area
The full report breaks down crime, transport links, schools and air quality in depth.