Flat 1, 57 Belsize Park Gardens, London, NW3 4JN

Flat 1 is a two-bedroom semi-detached house in London (NW3 4JN). It has a recorded floor area of 47 m² (around 506 sq ft), construction records dating it to before 1900 and council tax band E. Tenure is freehold. At 47 m² this is the smallest unit on EPC record across the building (47–64 m²). The building's EPC ratings span E to C, with this unit at the bottom. On EPC score it ranks last in the building (49 versus a best of 73). Other recorded features include a balcony. Period features are noted in the property record. The latest certificate (February 2020) shows an E (score 49), well below the UK norm with real room to improve. The rating has held steady at E across 2 certificates since October 2009. Between certificates, wall efficiency went from Very Poor to Poor, hot-water efficiency went from Very Poor to Poor and lighting went from Very Poor to Very Good; while main heating dropped from Good to Very Poor. The recommended improvements would lift it to C (score 76), a 2-band jump. Main heating runs on electricity.

At 47 m² it sits well below the postcode median (89 m² across 36 EPCs), making it one of the more compact homes locally. It lags the bulk of the postcode on energy efficiency (less efficient than 78% of similar EPCs). 4 planning records sit against the property, 2 approved, 0 refused. Past consents include new windows, meaningful when judging how the property has evolved.