15 York House, Courtlands, Sheen Road, Richmond, TW10 5BD

15 York House is a three-bedroom mid-terrace house in Richmond (TW10 5BD). It has a recorded floor area of 100 m² (around 1081 sq ft), construction records dating it to 1950-1966 and council tax band E. At 100 m² this is the 12th smallest of 13 units on EPC record in the building, where floor areas span 64–101 m². The building's EPC ratings span E to C, with this unit at the bottom. The latest certificate (January 2010) shows an E (score 45), well below the UK norm with real room to improve. Main heating runs on electricity. The latest certificate is from January 2010, so improvements made since then won't be reflected.

Held since June 2010 — that's 16 years off the open market, well above the local norm. At 100 m² it's 16.8% larger than the typical home in the postcode (86 m² median across 12 EPCs). On energy efficiency it sits in the bottom 10% of properties in this postcode — significant headroom for improvement. Today's modelled estimate of £683,000 sits 70.8% above the 2010 sale of £400,000.