4 Y Llwyni, Llangyfelach, Swansea, SA6 6BL

4 Y Llwyni is a one-bedroom end-of-terrace house in Llangyfelach, Swansea, Swansea (SA6 6BL). It has a recorded floor area of 38 m² (around 409 sq ft), construction records dating it to 1983-1990 and council tax band A. The latest certificate (January 2019) shows a D (score 64), on the cusp of jumping into the C band. When first surveyed in November 2008 the rating was E, the property has climbed 1 band since. Between certificates, hot-water efficiency went from Very Poor to Average and main heating went from Poor to Average; while wall efficiency dropped from Good to Average and window efficiency dropped from Good to Average. The recommended improvements would lift it to A (score 93), a 3-band jump. Main heating runs on electricity.

It hasn't traded since July 2008, a hold of 18 years that's notably long for the area. That sale landed at the peak of the pre-credit-crunch market, which is a useful reference point when interpreting the price. Across 2002–2008, sale prices on this property compounded at 11.7% per year. Today's modelled estimate of £108,000 sits 62.4% above the 2008 sale of £66,500. At 38 m² it's 28.3% smaller than the typical home in the postcode (53 m² median across 15 EPCs). It lags the bulk of the postcode on energy efficiency (less efficient than 80% of similar EPCs).