Ffynnon Y Dderwen, Beidr Non, Llannon, Llanelli, SA14 6BA

Ffynnon Y Dderwen is a detached house in Llannon, Llanelli, Llanelli (SA14 6BA). It has a recorded floor area of 233 m² (around 2508 sq ft), construction records dating it to 2007-2011 and council tax band G. The latest certificate (January 2022) shows a C (score 76), near the top of the C band. When first surveyed in January 2017 the rating was D, the property has climbed 1 band since. Between certificates, lighting went from Good to Very Good and main heating went from Poor to Good; while hot-water efficiency dropped from Poor to Very Poor. The recommended improvements would push it to B (score 83). Main heating runs on electricity.

At 233 m² the property is well over the postcode median (87 m² across 18 EPCs), placing it in the larger end of the local stock. Its energy rating outperforms most of the postcode (better than 89% of similar EPCs). Today's modelled estimate of £542,000 sits 80.7% above the 2017 sale of £300,000. On the market in March 2017 and unlisted since — roughly 9 years.