3 Coach House Mews, Southwark, London, SE1 4PP

3 Coach House Mews is a one-bedroom detached house in Southwark, London, London (SE1 4PP). It has a recorded floor area of 93 m² (around 997 sq ft) and construction records dating it to 1996-2002. The latest certificate (December 2011) shows a D (score 68), on the cusp of jumping into the C band. When first surveyed in January 2009 the rating was F, the property has climbed 2 bands since. Between certificates, wall efficiency went from Very Poor to Good, roof efficiency went from Very Poor to Good and window efficiency went from Poor to Average. The recommended improvements would push it to C (score 73). The latest certificate is from December 2011, so improvements made since then won't be reflected. At 93 m² this is the 2nd smallest of 7 units on EPC record in the building, where floor areas span 85–271 m². The building's EPC ratings span D to B, with this unit at the bottom. On EPC score it ranks last in the building (68 versus a best of 82).

Untraded for 27 years, with the last transfer in April 1999. Only one transfer is on record with HM Land Registry, suggesting it has stayed in the same hands for a long time. At 93 m² it's 20.9% smaller than the typical home in the postcode (117 m² median across 6 EPCs). On energy efficiency it sits in the bottom 10% of properties in this postcode — significant headroom for improvement. Today's modelled estimate of £606,000 sits 261.8% above the 1999 sale of £167,500. On a £-per-square-foot basis, the last sale (£168/sq ft) was about 75.1% below the postcode norm.