4a, Green Parade, Whitton Road, Hounslow, TW3 2EN

4a is a mid-terrace house in Hounslow (TW3 2EN). It has a recorded floor area of 20 m² (around 215 sq ft), construction records dating it to 1900-1929 and council tax band C. At 20 m² this is the smallest unit on EPC record across the building (20–86 m²). The building's EPC ratings span E to C across 8 units on file. The latest certificate (January 2026) shows a D (score 65), on the cusp of jumping into the C band. Earlier certificates rated it C (June 2013); the latest reading is one band lower. Between certificates, roof efficiency dropped from Good to Average and window efficiency dropped from Good to Average. The recommended improvements would push it to C (score 77). Main heating runs on to be used only when there is no heating/hot. This certificate was lodged in the last six months, so the rating reflects current condition.

Untraded for 29 years, with the last transfer in September 1997. Across 1996–1997, sale prices on this property compounded at 145% per year. Today's modelled estimate of £234,000 sits 138.8% above the 1997 sale of £98,000. On a £-per-square-foot basis, the last sale (£455/sq ft) was about 298.2% above the typical sold price in the postcode. At 20 m² it sits well below the postcode median (68 m² across 7 EPCs), making it one of the more compact homes locally.