Flat 3, 1 Arundel Gardens, London, W11 2LN

Flat 3 is a one-bedroom semi-detached house in London (W11 2LN). It has a recorded floor area of 21 m² (around 226 sq ft), construction records dating it to 1900-1929 and council tax band B. At 21 m² this is the smallest unit on EPC record across the building (21–134 m²). The building's EPC ratings span D to C, with this unit at the bottom. On EPC score it ranks last in the building (55 versus a best of 74). The latest certificate (March 2023) shows a D (score 55), a step below the typical UK home. When first surveyed in June 2009 the rating was E, the property has climbed 1 band since. Between certificates, window efficiency went from Very Poor to Good and lighting went from Average to Very Good; while hot-water efficiency dropped from Average to Very Poor and main heating dropped from Poor to Very Poor. The recommended improvements would lift it to B (score 84), a 2-band jump. Main heating runs on electricity.

Held since April 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 £322,000 sits 544% above the 1997 sale of £50,000. On a £-per-square-foot basis, the last sale (£221/sq ft) was about 69.5% below the postcode norm. At 21 m² it sits well below the postcode median (58 m² across 33 EPCs), making it one of the more compact homes locally. One planning record on file: new windows approved in 2019. Past consents include new windows, meaningful when judging how the property has evolved.