3 Hardy House, Union Lane, Isleworth, TW7 6GU

3 Hardy House is a one-bedroom mid-terrace house in Isleworth (TW7 6GU). It has a recorded floor area of 47 m² (around 506 sq ft), construction records dating it to 2007-2011 and council tax band C. At 47 m² this is the smallest unit on EPC record across 3 Hardy House (47–48 m²). The building's EPC ratings span C to B, with this unit at the bottom. On EPC score it ranks last in the building (79 versus a best of 85). The latest certificate (July 2021) shows a C (score 79), near the top of the C band. Earlier certificates rated it B (July 2010); the latest reading is one band lower. Between certificates, lighting dropped from Very Good to Good.

Today's modelled estimate of £234,000 is 14.9% below the 2022 sale of £275,000, a rare downward gap that often correlates with deferred maintenance or unfinished works. On a £-per-square-foot basis, the last sale (£544/sq ft) was about 156% above the typical sold price in the postcode. At 47 m² it sits well below the postcode median (72 m² across 34 EPCs), making it one of the more compact homes locally. It lags the bulk of the postcode on energy efficiency (less efficient than 82% of similar EPCs). Last sale on file: £275,000 in February 2022. That sale was during the post-pandemic price surge, when transactions cleared materially above pre-2020 trend.