Aspen House, Flat 1, 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 47 m² (around 506 sq ft) and construction records dating it to 1983-1990. At 47 m² this is the 8th 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 (April 2019) shows an E (score 40), well below the UK norm with real room to improve. The rating has held steady at E across 3 certificates since January 2009. Between certificates, lighting went from Good to Very Good; while wall efficiency dropped from Good to Very Poor and window efficiency dropped from Average to Poor. The recommended improvements would lift it to C (score 70), 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 £416,000 sits 436.5% above the 1995 sale of £77,541. It lags the bulk of the postcode on energy efficiency (less efficient than 71% of similar EPCs).