Flat 5, 22 Belsize Square, London, NW3 4HT

Flat 5 is a two-bedroom semi-detached house in London (NW3 4HT). It has a recorded floor area of 83 m² (around 893 sq ft), construction records dating it to before 1900 and council tax band C. At 83 m² this is the smallest unit on EPC record across the building (83–118 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 (58 versus a best of 74). The latest certificate (October 2015) shows a D (score 58), a step below the typical UK home. Earlier certificates rated it C (May 2013); the latest reading is one band lower. Between certificates, window efficiency went from Average to Good, hot-water efficiency went from Average to Good and lighting went from Very Poor to Very Good; while wall efficiency dropped from Good to Very Poor and roof efficiency dropped from Average to Very Poor. The latest certificate is from October 2015, so improvements made since then won't be reflected.

2 planning records sit against the property, 2 approved, 0 refused. Past consents include new windows, meaningful when judging how the property has evolved. Across 2013–2022, sale prices on this property compounded at 4.3% per year. On a £-per-square-foot basis, the last sale (£1,119/sq ft) was about 99.5% above the typical sold price in the postcode. Most recent transfer: May 2022 at £1,000,000. That sale was during the post-pandemic price surge, when transactions cleared materially above pre-2020 trend.