Flat 2, 1 Haven Green, London, W5 2UU

Flat 2 is a one-bedroom mid-terrace house in London (W5 2UU). It has a recorded floor area of 41 m² (around 441 sq ft), construction records dating it to 1950-1966 and council tax band D. At 41 m² this is the 3rd smallest of 7 units on EPC record in the building, where floor areas span 37–72 m². The building's EPC ratings span D to C, with this unit at the top. On EPC score it ranks first in the building (75 versus a worst of 59). The latest certificate (July 2019) shows a C (score 75), near the top of the C band. The rating has held steady at C across 2 certificates since April 2009. Between certificates, wall efficiency went from Very Poor to Poor, hot-water efficiency went from Average to Good and lighting went from Very Poor to Very Good.

Held since April 2004 — that's 22 years off the open market, well above the local norm. Across 2003–2004, sale prices on this property compounded at 8.9% per year. Today's modelled estimate of £350,000 sits 67.5% above the 2004 sale of £209,000. On a £-per-square-foot basis, the last sale (£474/sq ft) was about 33.3% above the typical sold price in the postcode. At 41 m² it sits well below the postcode median (63 m² across 46 EPCs), making it one of the more compact homes locally.