14 Chartwell Close, Greenford, UB6 8LP

14 Chartwell Close is a one-bedroom end-of-terrace house in Greenford (UB6 8LP). It has a recorded floor area of 34 m² (around 366 sq ft), construction records dating it to 1996-2002 and council tax band C. The latest certificate (February 2013) returns a B (score 82), comfortably above the UK average. The rating has held steady at B across 2 certificates since July 2009. Between certificates, main heating went from Poor to Average. Main heating runs on electricity. The latest certificate is from February 2013, so improvements made since then won't be reflected. At 34 m² this is the 25th smallest of 41 units on EPC record in the building, where floor areas span 27–56 m². The building's EPC ratings span E to B, with this unit at the top. On EPC score it ranks first in the building (82 versus a worst of 39).

Held since June 2010 — that's 16 years off the open market, well above the local norm. On energy efficiency it sits in the top 10% of properties in this postcode. Across 1998–2010, sale prices on this property compounded at 8.3% per year. Today's modelled estimate of £210,000 is 39.1% above the 2010 sale price. On a £-per-square-foot basis, the last sale (£413/sq ft) was about 32.1% above the typical sold price in the postcode.