21 Chalkstone Close, Welling, DA16 3DJ

21 Chalkstone Close is a two-bedroom semi-detached house in Welling (DA16 3DJ). It has a recorded floor area of 53 m² (around 570 sq ft), construction records dating it to 1983-1990 and council tax band C. At 53 m² this is the 31st smallest of 39 units on EPC record in the building, where floor areas span 40–58 m². The building's EPC ratings span E to B, with this unit at the bottom. On EPC score it ranks last in the building (44 versus a best of 81). Period features are noted in the property record. The latest certificate (August 2018) shows an E (score 44), well below the UK norm with real room to improve. Earlier certificates rated it D (February 2012); the latest reading is one band lower. Between certificates, lighting went from Very Poor to Good; while hot-water efficiency dropped from Average to Very Poor and main heating dropped from Average to Very Poor. The recommended improvements would lift it to C (score 74), a 2-band jump. Main heating runs on electricity.

On energy efficiency it sits in the bottom 10% of properties in this postcode — significant headroom for improvement. Sold December 2022 for £270,000. Across the public record there are 8 sales, relatively high churn for a single property. That sale was during the post-pandemic price surge, when transactions cleared materially above pre-2020 trend. Across 1998–2022, sale prices on this property compounded at 6.5% per year. On a £-per-square-foot basis, the last sale (£473/sq ft) was about 112.6% above the typical sold price in the postcode.