Aspen House, Flat 17, 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 62 m² (around 667 sq ft) and construction records dating it to 1900-1929. At 62 m² this is the 20th 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 (March 2020) shows an E (score 50), well below the UK norm with real room to improve. Earlier certificates rated it D (December 2010); the latest reading is one band lower. Between certificates, lighting went from Good to Very Good; while wall efficiency dropped from Good to Poor. The recommended improvements would push it to D (score 66). Main heating runs on electricity.

It hasn't traded since March 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 £429,000 sits 432.6% above the 1995 sale of £80,541. On a £-per-square-foot basis, the last sale (£121/sq ft) was about 20.6% below the postcode norm. At 62 m² it's 24% larger than the typical home in the postcode (50 m² median across 28 EPCs). It lags the bulk of the postcode on energy efficiency (less efficient than 71% of similar EPCs).