203b, Rotherhithe New Road, Southwark, London, SE16 2BA

203b is a one-bedroom semi-detached house in Southwark, London, London (SE16 2BA). It has a recorded floor area of 51 m² (around 549 sq ft), construction records dating it to before 1900 and council tax band B. Tenure is freehold. The latest certificate (November 2018) shows an E (score 53), well below the UK norm with real room to improve. When first surveyed in June 2015 the rating was G, the property has climbed 2 bands since. Between certificates, roof efficiency went from Very Poor to Very Good and main heating went from Very Poor to Average; while wall efficiency dropped from Poor to Very Poor and window efficiency dropped from Good to Average. The recommended improvements would lift it to C (score 69), a 2-band jump. Main heating runs on electricity. At 51 m² this is the 6th smallest of 7 units on EPC record in the building, where floor areas span 29–54 m². The building's EPC ratings span E to C, with this unit at the bottom.

Held since January 1997 — that's 29 years off the open market, well above the local norm. Only one transfer is on record with HM Land Registry, suggesting it has stayed in the same hands for a long time. At 51 m² the property is well over the postcode median (29 m² across 6 EPCs), placing it in the larger end of the local stock. Today's modelled estimate of £265,000 sits 960% above the 1997 sale of £25,000.