10 Cwm Gwynlais, Tongwynlais, Cardiff, CF15 7HU

10 Cwm Gwynlais is a detached house in Tongwynlais, Cardiff, Cardiff (CF15 7HU). It has a recorded floor area of 123 m² (around 1324 sq ft), construction records dating it to 1991-1995 and council tax band F. The latest certificate (August 2014) shows an E (score 44), well below the UK norm with real room to improve. The rating has held steady at E across 2 certificates since September 2013. Between certificates, roof efficiency went from Average to Good and window efficiency went from Average to Good; while wall efficiency dropped from Good to Poor. The recommended improvements would lift it to C (score 79), a 2-band jump. The latest certificate is from August 2014, so improvements made since then won't be reflected.

At 123 m² it's 17.1% larger than the typical home in the postcode (105 m² median across 12 EPCs). On energy efficiency it sits in the bottom 10% of properties in this postcode — significant headroom for improvement. Today's modelled estimate of £406,000 sits 64% above the 2014 sale of £247,500. On a £-per-square-foot basis, the last sale (£187/sq ft) was about 27.7% above the typical sold price in the postcode. Last changed hands 12 years ago, in April 2014.