Flat 4, 337 Chiswick High Road, London, W4 4HS

Flat 4 is a one-bedroom mid-terrace house in London (W4 4HS). It has a recorded floor area of 40 m² (around 432 sq ft), construction records dating it to before 1900 and council tax band C. The latest certificate (October 2010) shows an F (score 31), near the bottom of the EPC scale. The recommended improvements would push it to E (score 43). Main heating runs on electricity. The latest certificate is from October 2010, so improvements made since then won't be reflected. At 40 m² this is the 2nd smallest of 4 units on EPC record in the building, where floor areas span 39–56 m². The building's EPC ratings span F to C, with this unit at the bottom. On EPC score it ranks last in the building (31 versus a best of 73).

At 40 m² it's 21.4% smaller than the typical home in the postcode (51 m² median across 32 EPCs). On energy efficiency it sits in the bottom 10% of properties in this postcode — significant headroom for improvement. Across 1999–2014, sale prices on this property compounded at 8.3% per year. On a £-per-square-foot basis, the last sale (£869/sq ft) was about 90.8% above the typical sold price in the postcode. 12 years since the last transfer (July 2014).