Rosslyn Heights, Flat 3, 2 Belsize Lane, London, NW3 5AB

Rosslyn Heights is a detached house in London (NW3 5AB). It has a recorded floor area of 94 m² (around 1012 sq ft) and construction records dating it to before 1900. At 94 m² this is the 2nd smallest of 5 units on EPC record in Rosslyn Heights, where floor areas span 72–191 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 (44 versus a best of 75). The latest certificate (February 2014) shows an E (score 44), well below the UK norm with real room to improve. The recommended improvements would lift it to C (score 78), a 2-band jump. The latest certificate is from February 2014, so improvements made since then won't be reflected.

At 94 m² it's 15.3% smaller than the typical home in the postcode (111 m² median across 26 EPCs). On energy efficiency it sits in the bottom 10% of properties in this postcode — significant headroom for improvement. Last sale on file: £1,330,000 in September 2021. Across the public record there are 4 sales, relatively high churn for a single property. That sale was during the post-pandemic price surge, when transactions cleared materially above pre-2020 trend. One planning record on file: subdivision approved in 2022. Past consents include subdivision, meaningful when judging how the property has evolved. Across 2002–2021, sale prices on this property compounded at 5.8% per year. On a £-per-square-foot basis, the last sale (£1,314/sq ft) was about 105% above the typical sold price in the postcode.