Flat 2, 23 Well Walk, London, NW3 1BY

Flat 2 is a semi-detached house in London (NW3 1BY). It has a recorded floor area of 89 m² (around 958 sq ft), construction records dating it to 1900-1929 and council tax band G. At 89 m² this is the smallest unit on EPC record across the building (89–151 m²). The building's EPC ratings span E to C, with this unit at the bottom. The latest certificate (January 2015) shows an E (score 54), well below the UK norm with real room to improve. The rating has held steady at E across 2 certificates since March 2009. The recommended improvements would lift it to C (score 75), a 2-band jump. The latest certificate is from January 2015, so improvements made since then won't be reflected.

At 89 m² it sits well below the postcode median (137 m² across 15 EPCs), making it one of the more compact homes locally. It lags the bulk of the postcode on energy efficiency (less efficient than 80% of similar EPCs). Across 1996–2020, sale prices on this property compounded at 7.2% per year. On a £-per-square-foot basis, the last sale (£1,566/sq ft) was about 112% above the typical sold price in the postcode. Sold November 2020 for £1,500,000.