Flat 4, 146 Hornsey Lane, London, N6 5NS

Flat 4 is a two-bedroom mid-terrace house in London (N6 5NS). It has a recorded floor area of 60 m² (around 646 sq ft), construction records dating it to 1930-1949 and council tax band E. At 60 m² this is the smallest unit on EPC record across the building (60–71 m²). On EPC score it ranks first in the building (76 versus a worst of 72). The latest certificate (November 2020) shows a C (score 76), near the top of the C band. When first surveyed in June 2015 the rating was D, the property has climbed 1 band since. Between certificates, lighting went from Very Poor to Very Good. The recommended improvements would push it to B (score 83).

Held since May 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. Today's modelled estimate of £549,000 sits 510% above the 1997 sale of £90,000. On a £-per-square-foot basis, the last sale (£139/sq ft) was about 55.7% below the postcode norm. At 60 m² it's 29.6% smaller than the typical home in the postcode (85 m² median across 16 EPCs).