First Floor Rear Flat, 1 Nassington Road, London, NW3 2TX

First Floor Rear Flat is a semi-detached house in London (NW3 2TX). It has a recorded floor area of 27 m² (around 291 sq ft) and construction records dating it to 1900-1929. The latest certificate (December 2018) shows an E (score 40), well below the UK norm with real room to improve. When first surveyed in October 2008 the rating was F, the property has climbed 1 band since. Between certificates, window efficiency went from Very Poor to Good and lighting went from Very Poor to Very Good; while hot-water efficiency dropped from Average to Very Poor and main heating dropped from Average to Very Poor. The recommended improvements would lift it to C (score 76), a 2-band jump. Main heating runs on electricity.

Untraded for 29 years, with the last transfer in May 1997. 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 £323,000 sits 258.9% above the 1997 sale of £90,000. On a £-per-square-foot basis, the last sale (£310/sq ft) was about 64% below the postcode norm. At 27 m² it sits well below the postcode median (84 m² across 33 EPCs), making it one of the more compact homes locally. It lags the bulk of the postcode on energy efficiency (less efficient than 85% of similar EPCs).