Catherine House, Flat 15, Busch Close, Isleworth, TW7 6UE

Catherine House is a two-bedroom end-of-terrace house in Isleworth (TW7 6UE). It has a recorded floor area of 58 m² (around 624 sq ft), construction records dating it to 1996-2002 and council tax band D. At 58 m² this is the 3rd smallest of 16 units on EPC record in Catherine House, where floor areas span 57–60 m². The building's EPC ratings span D to B, with this unit at the bottom. The latest certificate (March 2021) shows a D (score 68), on the cusp of jumping into the C band. The rating has held steady at D across 2 certificates since July 2010. Between certificates, lighting went from Good to Very Good and main heating went from Poor to Average. The recommended improvements would push it to C (score 77). Main heating runs on electricity.

On the market in October 2014 and unlisted since — roughly 12 years. Across the public record there are 4 sales, relatively high churn for a single property. Across 1997–2014, sale prices on this property compounded at 6.4% per year. Today's modelled estimate of £347,000 is 11.9% above the 2014 sale price. On a £-per-square-foot basis, the last sale (£497/sq ft) was about 85.6% above the typical sold price in the postcode.