Flat 4, 47 Belsize Park Gardens, London, NW3 4JL

Flat 4 is a semi-detached house in London (NW3 4JL). It has a recorded floor area of 54 m² (around 581 sq ft), construction records dating it to before 1900 and council tax band E. At 54 m² this is the 2nd smallest of 8 units on EPC record in the building, where floor areas span 51–134 m². The building's EPC ratings span E to B across 8 units on file. The latest certificate (July 2016) shows a D (score 66), on the cusp of jumping into the C band. The recommended improvements would push it to C (score 79).

One planning record on file: an extension approved in 2017. Past consents include an extension, a porch and new windows, meaningful when judging how the property has evolved. On a £-per-square-foot basis, the last sale (£1,084/sq ft) was about 88.6% above the typical sold price in the postcode. On the market in October 2016 and unlisted since — roughly 10 years. At 54 m² it's 25% smaller than the typical home in the postcode (72 m² median across 25 EPCs).