6b, Blackheath Grove, London, SE3 0DQ

6b is a semi-detached house in London (SE3 0DQ). It has a recorded floor area of 42 m² (around 452 sq ft) and construction records dating it to 1900-1929. At 42 m² this is the 3rd smallest of 24 units on EPC record in the building, where floor areas span 28–114 m². The building's EPC ratings span F to C, with this unit at the top. The latest certificate (August 2020) shows a C (score 69), just inside the C band. The rating has held steady at C across 2 certificates since March 2010. Between certificates, wall efficiency went from Very Poor to Poor.

Held since July 2001 — that's 25 years off the open market, well above the local norm. Across the public record there are 4 sales, relatively high churn for a single property. Across 1995–2001, sale prices on this property compounded at 42.6% per year. Today's modelled estimate of £335,000 sits 100.6% above the 2001 sale of £167,000. At 42 m² it's 25% smaller than the typical home in the postcode (56 m² median across 45 EPCs).