21 Coptefield Drive, Belvedere, DA17 5RJ

21 Coptefield Drive is a one-bedroom semi-detached house in Belvedere (DA17 5RJ). It has a recorded floor area of 46 m² (around 495 sq ft), construction records dating it to 1983-1990 and council tax band B. The latest certificate (September 2014) shows a D (score 60), on the cusp of jumping into the C band. The rating has held steady at D across 2 certificates since October 2008. Between certificates, hot-water efficiency went from Poor to Average, lighting went from Very Poor to Average and main heating went from Poor to Average. The recommended improvements would push it to C (score 71). Main heating runs on electricity. The latest certificate is from September 2014, so improvements made since then won't be reflected. At 46 m² this is the 8th smallest of 28 units on EPC record in the building, where floor areas span 38–114 m². The building's EPC ratings span F to B across 28 units on file.

Across 2000–2015, sale prices on this property compounded at 7.4% per year. Today's modelled estimate of £194,000 is 29.4% above the 2015 sale price. On a £-per-square-foot basis, the last sale (£303/sq ft) was about 47.7% above the typical sold price in the postcode. 11 years since the last transfer (January 2015).