Flat 4, 5 Clanricarde Gardens, London, W2 4JJ

Flat 4 is a one-bedroom mid-terrace house in London (W2 4JJ). It has a recorded floor area of 54 m² (around 581 sq ft) and construction records dating it to 1900-1929. At 54 m² this is the 6th smallest of 12 units on EPC record in the building, where floor areas span 26–143 m². The building's EPC ratings span D to C, with this unit at the top. The latest certificate (December 2019) shows a C (score 76), near the top of the C band. The rating has held steady at C across 2 certificates since January 2009. Between certificates, lighting went from Very Poor to Very Good. The recommended improvements would push it to B (score 82).

Held since June 1998 — that's 28 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 £708,000 sits 289% above the 1998 sale of £182,000. On a £-per-square-foot basis, the last sale (£313/sq ft) was about 48.9% below the postcode norm.