Flat 3, 1 Frognal, London, NW3 6AL

Flat 3 is a semi-detached house in London (NW3 6AL). It has a recorded floor area of 99 m² (around 1066 sq ft), construction records dating it to 1900-1929 and council tax band G. At 99 m² this is the 2nd smallest of 4 units on EPC record in the building, where floor areas span 80–109 m². The building's EPC ratings span E to C, with this unit at the top. The latest certificate (February 2025) shows a C (score 71). The rating has held steady at C across 2 certificates since October 2012. Between certificates, lighting went from Very Poor to Very Good; while wall efficiency dropped from Good to Very Poor and window efficiency dropped from Good to Poor. The recommended improvements would push it to B (score 82).

Untraded for 30 years, with the last transfer in March 1996. 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 £1,033,000 sits 429.7% above the 1996 sale of £195,000. On a £-per-square-foot basis, the last sale (£183/sq ft) was about 48.9% below the postcode norm. At 99 m² it's 23.6% larger than the typical home in the postcode (80 m² median across 25 EPCs).