Grimthorpe House, Flat 126, Percival Street, Islington, London, EC1V 0BR

Grimthorpe House is a one-bedroom mid-terrace house in Islington, London, London (EC1V 0BR). It has a recorded floor area of 51 m² (around 549 sq ft), construction records dating it to 1967-1975 and council tax band C. The latest certificate (January 2022) shows a D (score 63), on the cusp of jumping into the C band. The rating has held steady at D across 2 certificates since January 2012. Between certificates, lighting went from Good to Very Good; while wall efficiency dropped from Good to Average. The recommended improvements would push it to C (score 77). At 51 m² this is the 3rd smallest of 27 units on EPC record in Grimthorpe House, where floor areas span 50–124 m². The building's EPC ratings span E to B across 27 units on file. Other recorded features include a balcony.

At 51 m² it's 26% smaller than the typical home in the postcode (69 m² median across 26 EPCs). It lags the bulk of the postcode on energy efficiency (less efficient than 81% of similar EPCs). Across 2003–2022, sale prices on this property compounded at 4.4% per year. On a £-per-square-foot basis, the last sale (£756/sq ft) was about 47.3% above the typical sold price in the postcode. Most recent transfer: April 2022 at £415,000. That sale was during the post-pandemic price surge, when transactions cleared materially above pre-2020 trend.