20 Cartmel Close, Dronfield Woodhouse, Dronfield, S18 8PF

20 Cartmel Close is a three-bedroom semi-detached house in Dronfield Woodhouse, Dronfield, Dronfield (S18 8PF). It has a recorded floor area of 90 m² (around 969 sq ft), construction records dating it to 1967-1975 and council tax band B. The latest certificate (April 2017) shows an E (score 49), well below the UK norm with real room to improve. The rating has held steady at E across 3 certificates since October 2008. Between certificates, hot-water efficiency went from Poor to Average, lighting went from Average to Very Good and main heating went from Average to Good; while roof efficiency dropped from Average to Very Poor and window efficiency dropped from Good to Average. The recommended improvements would lift it to C (score 79), a 2-band jump. Records show the property has been extended at some point in its history. The home occupies a cul-de-sac position.

Untraded for 19 years, with the last transfer in March 2007. That sale landed at the peak of the pre-credit-crunch market, which is a useful reference point when interpreting the price. At 90 m² it's 21.6% larger than the typical home in the postcode (74 m² median across 9 EPCs). On energy efficiency it sits in the bottom 10% of properties in this postcode — significant headroom for improvement. Across 1996–2007, sale prices on this property compounded at 13.1% per year. Today's modelled estimate of £249,000 sits 51% above the 2007 sale of £164,950. On a £-per-square-foot basis, the last sale (£170/sq ft) was about 17.2% below the postcode norm.