26 Derwen Fawr, Llandybie, Ammanford, SA18 2UY

26 Derwen Fawr is a four-bedroom detached house in Llandybie, Ammanford, Ammanford (SA18 2UY). It has a recorded floor area of 128 m² (around 1378 sq ft), construction records dating it to 1983-1990 and council tax band E. The latest certificate (February 2017) shows a C (score 71). When first surveyed in March 2010 the rating was F, the property has climbed 3 bands since. Between certificates, hot-water efficiency went from Average to Good, lighting went from Very Poor to Very Good and main heating went from Poor to Good. The recommended improvements would push it to B (score 82). Other recorded features include a conservatory and a self-contained annexe.

At 128 m² the property is well over the postcode median (81 m² across 17 EPCs), placing it in the larger end of the local stock. Its energy rating outperforms most of the postcode (better than 71% of similar EPCs). Across 2010–2017, sale prices on this property compounded at 1.7% per year. Today's modelled estimate of £337,000 is 37.6% above the 2017 sale price. On a £-per-square-foot basis, the last sale (£178/sq ft) was about 30% above the typical sold price in the postcode. 9 years since the last transfer (June 2017).