Aspen House, Flat 22, 10 Forest Road, Richmond, TW9 3BY

Aspen House is a one-bedroom end-of-terrace house in Richmond (TW9 3BY). It has a recorded floor area of 45 m² (around 484 sq ft) and construction records dating it to 1950-1966. At 45 m² this is the 7th smallest of 24 units on EPC record in Aspen House, where floor areas span 35–82 m². The building's EPC ratings span E to C, with this unit at the bottom. The latest certificate (November 2018) shows an E (score 50), well below the UK norm with real room to improve. Earlier certificates rated it D (October 2008); the latest reading is one band lower. Between certificates, window efficiency went from Average to Good and main heating went from Poor to Average; while wall efficiency dropped from Good to Poor and roof efficiency dropped from Good to Very Poor. The recommended improvements would push it to D (score 56). Main heating runs on electricity.

Held since March 1995 — that's 31 years off the open market, well above the local norm. Only one transfer is on record with HM Land Registry, suggesting it has stayed in the same hands for a long time. Today's modelled estimate of £373,000 sits 357.4% above the 1995 sale of £81,541. It lags the bulk of the postcode on energy efficiency (less efficient than 71% of similar EPCs).