21b, Kingsgate Road, London, NW6 4TD

21b is a detached house in London (NW6 4TD). It has a recorded floor area of 48 m² (around 519 sq ft) and construction records dating it to before 1900. At 48 m² this is the 17th smallest of 33 units on EPC record in the building, where floor areas span 14–129 m². The building's EPC ratings span E to C across 33 units on file. The latest certificate (October 2009) shows a D (score 64), on the cusp of jumping into the C band. The recommended improvements would push it to C (score 70). The latest certificate is from October 2009, so improvements made since then won't be reflected.

It hasn't traded since March 1999, a hold of 27 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 £474,000 sits 374% above the 1999 sale of £100,000. On a £-per-square-foot basis, the last sale (£193/sq ft) was about 54.6% below the postcode norm. At 48 m² it's 16.9% smaller than the typical home in the postcode (58 m² median across 79 EPCs).