Copper Beeches, Flat 7, 6 Witham Road, Isleworth, TW7 4AW

Copper Beeches is a one-bedroom semi-detached house in Isleworth (TW7 4AW). It has a recorded floor area of 46 m² (around 495 sq ft) and construction records dating it to 1983-1990. The latest certificate (January 2026) shows a C (score 80), near the top of the C band. The rating has held steady at C across 2 certificates since November 2015. Between certificates, hot-water efficiency went from Poor to Good and lighting went from Very Poor to Good; while window efficiency dropped from Good to Average. This certificate was lodged in the last six months, so the rating reflects current condition. At 46 m² this is the 6th smallest of 28 units on EPC record in Copper Beeches, where floor areas span 42–72 m². The building's EPC ratings span D to B across 28 units on file.

Untraded for 19 years, with the last transfer in September 2007. That sale landed at the peak of the pre-credit-crunch market, which is a useful reference point when interpreting the price. Across 1997–2007, sale prices on this property compounded at 11.9% per year. Today's modelled estimate of £268,000 is 42.2% above the 2007 sale price. On a £-per-square-foot basis, the last sale (£381/sq ft) was about 21.4% above the typical sold price in the postcode. At 46 m² it's 17.9% smaller than the typical home in the postcode (56 m² median across 27 EPCs).