Tompion House, Flat 64, Percival Street, Islington, London, EC1V 0HX

Tompion House is a mid-terrace house in Islington, London, London (EC1V 0HX). It has a recorded floor area of 108 m² (around 1163 sq ft), construction records dating it to 1900-1929 and council tax band D. At 108 m² this is the 21st smallest of 24 units on EPC record in Tompion House, where floor areas span 29–148 m². The building's EPC ratings span F to C, with this unit at the top. The latest certificate (November 2025) shows a C (score 69), just inside the C band. The rating has held steady at C across 2 certificates since December 2015. Between certificates, wall efficiency went from Very Poor to Poor; while window efficiency dropped from Average to Poor and lighting dropped from Very Good to Good. This certificate was lodged in the last six months, so the rating reflects current condition.

At 108 m² the property is well over the postcode median (57 m² across 23 EPCs), placing it in the larger end of the local stock. Across 2007–2016, sale prices on this property compounded at 7.1% per year. Today's modelled estimate of £879,000 is 13.4% above the 2016 sale price. On a £-per-square-foot basis, the last sale (£667/sq ft) was about 18% above the typical sold price in the postcode. Last changed hands 10 years ago, in August 2016.