Aspen House, Flat 4, 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 35 m² (around 377 sq ft) and construction records dating it to before 1900. At 35 m² this is the smallest unit on EPC record across Aspen House (35–82 m²). The building's EPC ratings span E to C, with this unit at the bottom. On EPC score it ranks last in the building (39 versus a best of 80). The latest certificate (October 2018) shows an E (score 39), 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 Very Poor to Poor and lighting went from Good to Very Good; while wall efficiency dropped from Good to Very Poor. The recommended improvements would lift it to C (score 69), a 2-band jump. Main heating runs on electricity.

It hasn't traded since June 1995, a hold of 31 years that's notably long for the area. 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 £336,000 sits 363.2% above the 1995 sale of £72,541. On a £-per-square-foot basis, the last sale (£193/sq ft) was about 28% above the typical sold price in the postcode. At 35 m² it sits well below the postcode median (51 m² across 28 EPCs), making it one of the more compact homes locally. It lags the bulk of the postcode on energy efficiency (less efficient than 71% of similar EPCs).