42a, Bell Road, Hounslow, TW3 3PB

42a is a detached house in Hounslow (TW3 3PB). It has a recorded floor area of 41 m² (around 438 sq ft), construction records dating it to 1900-1929 and council tax band B. At 41 m² this is the 7th smallest of 21 units on EPC record in the building, where floor areas span 23–99 m². The building's EPC ratings span E to B, with this unit at the bottom. On EPC score it ranks last in the building (46 versus a best of 82). The latest certificate (July 2010) shows an E (score 46), well below the UK norm with real room to improve. Main heating runs on electricity. The latest certificate is from July 2010, so improvements made since then won't be reflected.

Held since March 1998 — that's 28 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 £223,000 sits 93.9% above the 1998 sale of £115,000. On a £-per-square-foot basis, the last sale (£262/sq ft) was about 33.6% below the postcode norm. 3 planning records sit against the property, 2 approved, 1 refused. Past consents include an extension and subdivision, meaningful when judging how the property has evolved. At 41 m² it's 26.6% smaller than the typical home in the postcode (56 m² median across 20 EPCs). It lags the bulk of the postcode on energy efficiency (less efficient than 80% of similar EPCs).