59b, Grand Parade, Green Lanes, London, N4 1AF

59b is a mid-terrace house in London (N4 1AF). It has a recorded floor area of 57 m² (around 614 sq ft), construction records dating it to 1930-1949 and council tax band C. The latest certificate (November 2019) shows a D (score 63), on the cusp of jumping into the C band. The rating has held steady at D across 2 certificates since November 2009. Between certificates, hot-water efficiency went from Very Poor to Average; while main heating dropped from Average to Poor. The recommended improvements would lift it to B (score 83), a 2-band jump. Main heating runs on electricity. At 57 m² this is the 5th smallest of 33 units on EPC record in the building, where floor areas span 44–110 m². The building's EPC ratings span E to B across 33 units on file.

Held since December 2000 — that's 25 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 £393,000 sits 391.2% above the 2000 sale of £80,000. On a £-per-square-foot basis, the last sale (£130/sq ft) was about 20.4% below the postcode norm. At 57 m² it's 18.6% smaller than the typical home in the postcode (70 m² median across 42 EPCs).