Grimthorpe House, Flat 54, Percival Street, Islington, London, EC1V 0BP

Grimthorpe House is a four-bedroom end-of-terrace house in Islington, London, London (EC1V 0BP). It has a recorded floor area of 89 m² (around 958 sq ft), construction records dating it to 1950-1966 and council tax band D. The latest certificate (August 2020) shows a C (score 77), near the top of the C band. Earlier certificates rated it B (August 2010); the latest reading is one band lower. Between certificates, wall efficiency dropped from Good to Average. At 89 m² this is the 18th 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.

At 89 m² the property is well over the postcode median (65 m² across 18 EPCs), placing it in the larger end of the local stock. Across 2008–2022, sale prices on this property compounded at 3% per year. Today's modelled estimate of £626,000 is 13.8% above the 2022 sale price. On a £-per-square-foot basis, the last sale (£574/sq ft) was about 46.3% above the typical sold price in the postcode. Last sale on file: £550,000 in January 2022. That sale was during the post-pandemic price surge, when transactions cleared materially above pre-2020 trend.