Flat 1, 1 Stanley Gardens, London, W11 2ND

Flat 1 is a two-bedroom end-of-terrace house in London (W11 2ND). It has a recorded floor area of 84 m² (around 904 sq ft) and construction records dating it to before 1900. At 84 m² this is the 5th smallest of 9 units on EPC record in the building, where floor areas span 60–127 m². The building's EPC ratings span E to C, with this unit at the bottom. The latest certificate (February 2015) shows an E (score 49), well below the UK norm with real room to improve. The rating has held steady at E across 3 certificates since December 2009. Between certificates, lighting went from Very Poor to Average; while window efficiency dropped from Poor to Very Poor. The recommended improvements would lift it to C (score 77), a 2-band jump. The latest certificate is from February 2015, so improvements made since then won't be reflected.

It hasn't traded since September 2002, a hold of 24 years that's notably long for the area. Sale prices here have outpaced London HPI: 17.1% per year against 0% for the wider region. Today's modelled estimate of £1,137,000 sits 111.5% above the 2002 sale of £537,500. On a £-per-square-foot basis, the last sale (£594/sq ft) was about 15.1% below the postcode norm. At 84 m² it's 27.3% larger than the typical home in the postcode (66 m² median across 37 EPCs). On energy efficiency it sits in the bottom 10% of properties in this postcode — significant headroom for improvement.