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Get started12 Derwendeg is a semi-detached house in Porthyrhyd, Carmarthen, Carmarthen (SA32 8PW). It has a recorded floor area of 88 m² (around 947 sq ft), construction records dating it to 1950-1966 and council tax band C. The latest certificate (January 2023) shows a D (score 66), on the cusp of jumping into the C band. When first surveyed in September 2011 the rating was E, the property has climbed 1 band since. Between certificates, wall efficiency went from Poor to Good, roof efficiency went from Poor to Very Good and lighting went from Good to Very Good. The recommended improvements would push it to C (score 80). Main heating runs on oil.
12 Derwendeg has no Land Registry sales on file, suggesting it has stayed in the same hands since registration began.
£171,000
Modelled from EPC, postcode comparables.
That can mean the property has never traded since the registry began publishing in 1995, was a new build that hasn't been registered yet, or is held in the same hands long-term.
EPC Rating for 12 Derwendeg runs comfortably ahead of the street norm.
EPC Rating
66 (D)
Street avg 48 (E)
Floor Area
88 m²
Street avg 99 m²
CO₂ Emissions
4.1 t/year
Street avg 7.1 t/year
Crime
3/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
Derwen Deg — bus stop.
Changes detected from historical EPC data
Changed to a more efficient fuel source
Hot water system upgraded
Wall insulation improved
Loft insulation upgraded to recommended levels
More low energy lighting installed
Are we missing something? Tell us about home improvements to help adjust your valuation.
Median price across the last 5 sales in SA32 8PW: £182,000 (2025–2023).
Habitable Rooms
5 rooms
Street avg 5 rooms