Flat 3, 3 Belsize Park Gardens, London, NW3 4LB

Flat 3 is a two-bedroom semi-detached house in London (NW3 4LB). It has a recorded floor area of 125 m² (around 1345 sq ft), construction records dating it to 1930-1949 and council tax band D. At 125 m² this is the largest unit on EPC record across the building (63–125 m²). The latest certificate (October 2019) shows a D (score 68), on the cusp of jumping into the C band. The recommended improvements would push it to C (score 71).

Untraded for 17 years, with the last transfer in December 2008. That sale landed at the peak of the pre-credit-crunch market, which is a useful reference point when interpreting the price. At 125 m² the property is well over the postcode median (81 m² across 24 EPCs), placing it in the larger end of the local stock. Across 2006–2008, sale prices on this property compounded at 20.4% per year. Today's modelled estimate of £1,322,000 is 40.6% above the 2008 sale price. On a £-per-square-foot basis, the last sale (£699/sq ft) was about 22.3% below the postcode norm.