21a, Herbert Road, Greenwich, London, SE18 3TB

21a is a two-bedroom end-of-terrace house in Greenwich, London, London (SE18 3TB). It has a recorded floor area of 51 m² (around 549 sq ft), construction records dating it to 1900-1929 and council tax band B. At 51 m² this is the 5th smallest of 7 units on EPC record in the building, where floor areas span 24–77 m². The building's EPC ratings span E to C across 7 units on file. The latest certificate (July 2013) shows a D (score 60), on the cusp of jumping into the C band. The recommended improvements would push it to C (score 71). The latest certificate is from July 2013, so improvements made since then won't be reflected.

It hasn't traded since April 2001, a hold of 25 years that's notably long for the area. Only one transfer is on record with HM Land Registry, suggesting it has stayed in the same hands for a long time. Today's modelled estimate of £293,000 sits 134.4% above the 2001 sale of £125,000. At 51 m² it's 24.4% larger than the typical home in the postcode (41 m² median across 6 EPCs).