3 Choumert Mews, Southwark, London, SE15 4BD

3 Choumert Mews is a three-bedroom mid-terrace house in Southwark, London, London (SE15 4BD). It has a recorded floor area of 17 m² (around 179 sq ft), construction records dating it to 1950-1966 and council tax band B. At 17 m² this is the smallest unit on EPC record across the building (17–131 m²). The building's EPC ratings span E to C, with this unit at the bottom. On EPC score it ranks last in the building (44 versus a best of 72). The latest certificate (February 2011) shows an E (score 44), well below the UK norm with real room to improve. Earlier certificates rated it C (February 2009); the latest reading is 2 bands lower. Between certificates, wall efficiency dropped from Good to Poor and roof efficiency dropped from Good to Very Poor. The recommended improvements would push it to D (score 55). The latest certificate is from February 2011, so improvements made since then won't be reflected.

Untraded for 17 years, with the last transfer in July 2009. That sale fell during the post-crash dip, which often skews comparisons against later neighbouring sales. At 17 m² it sits well below the postcode median (90 m² across 5 EPCs), making it one of the more compact homes locally. It lags the bulk of the postcode on energy efficiency (less efficient than 80% of similar EPCs). Today's modelled estimate of £693,000 is 49% above the 2009 sale price. On a £-per-square-foot basis, the last sale (£2,602/sq ft) was about 171.4% above the typical sold price in the postcode.