42c, Denmark Hill, Southwark, London, SE5 8RZ

42c is an end-of-terrace house in Southwark, London, London (SE5 8RZ). It has a recorded floor area of 28 m² (around 301 sq ft) and construction records dating it to 1930-1949. At 28 m² this is the 2nd smallest of 20 units on EPC record in the building, where floor areas span 22–117 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 (39 versus a best of 82). The latest certificate (February 2026) shows an E (score 39), well below the UK norm with real room to improve. The rating has held steady at E across 2 certificates since January 2016. Between certificates, wall efficiency went from Very Poor to Poor and roof efficiency went from Very Poor to Average; while window efficiency dropped from Poor to Very Poor and hot-water efficiency dropped from Good to Average. The recommended improvements would lift it to C (score 70), a 2-band jump. Main heating runs on electricity. This certificate was lodged in the last six months, so the rating reflects current condition.

At 28 m² it sits well below the postcode median (60 m² across 19 EPCs), making it one of the more compact homes locally.