4 Gun Carriage Walk, Duke Of Wellington Avenue, Greenwich, London, SE18 6LJ

4 Gun Carriage Walk is a detached house in Greenwich, London, London (SE18 6LJ). It has a recorded floor area of 40 m² (around 431 sq ft), construction records dating it to 1930-1949 and council tax band B. At 40 m² this is the smallest unit on EPC record across the building (40–138 m²). The building's EPC ratings span D to C, with this unit at the top. The latest certificate (August 2025) shows a C (score 70). The rating has held steady at C across 2 certificates since September 2015. Between certificates, window efficiency went from Very Poor to Average; while wall efficiency dropped from Poor to Very Poor and hot-water efficiency dropped from Good to Average.

At 40 m² it sits well below the postcode median (92 m² across 10 EPCs), making it one of the more compact homes locally. Its energy rating outperforms most of the postcode (better than 80% of similar EPCs). On a £-per-square-foot basis, the last sale (£790/sq ft) was about 51.2% above the typical sold price in the postcode. On the market in October 2015 and unlisted since — roughly 11 years.