23a, Moreton Place, Westminster, London, SW1V 2NL

23a is a mid-terrace house in Westminster, London, London (SW1V 2NL). It has a recorded floor area of 72 m² (around 775 sq ft), construction records dating it to before 1900 and council tax band E. At 72 m² this is the 9th smallest of 22 units on EPC record in the building, where floor areas span 38–297 m². The building's EPC ratings span E to C across 22 units on file. The latest certificate (June 2010) shows a D (score 61), on the cusp of jumping into the C band. The recommended improvements would push it to C (score 72). The latest certificate is from June 2010, so improvements made since then won't be reflected.

It hasn't traded since March 1996, a hold of 30 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 £628,000 sits 12460% above the 1996 sale of £5,000. On a £-per-square-foot basis, the last sale (£6/sq ft) was about 99.2% below the postcode norm. One planning record on file: a basement excavation approved in 2016. Past consents include a basement excavation and new windows, meaningful when judging how the property has evolved. At 72 m² it's 20.4% smaller than the typical home in the postcode (91 m² median across 26 EPCs).