Grimthorpe House, Flat 64, Percival Street, Islington, London, EC1V 0BP

Grimthorpe House is an end-of-terrace house in Islington, London, London (EC1V 0BP). It has a recorded floor area of 83 m² (around 893 sq ft), construction records dating it to 1976-1982 and council tax band D. The latest certificate (July 2020) shows a C (score 80), near the top of the C band. The rating has held steady at C across 2 certificates since August 2009. Between certificates, wall efficiency went from Poor to Average. The recommended improvements would push it to B (score 84). At 83 m² this is the 16th smallest of 19 units on EPC record in Grimthorpe House, where floor areas span 52–89 m². The building's EPC ratings span E to B across 19 units on file.

Untraded for 19 years, with the last transfer in October 2007. That sale landed at the peak of the pre-credit-crunch market, which is a useful reference point when interpreting the price. Across 2003–2007, sale prices on this property compounded at 13.7% per year. Today's modelled estimate of £575,000 sits 64.3% above the 2007 sale of £350,000. At 83 m² it's 27.7% larger than the typical home in the postcode (65 m² median across 18 EPCs).