Flat, 108 Upper Street, Islington, London, N1 1QN

Flat is a mid-terrace house in Islington, London, London (N1 1QN). It has a recorded floor area of 98 m² (around 1055 sq ft) and construction records dating it to before 1900. The latest certificate (July 2022) shows an E (score 50), well below the UK norm with real room to improve. When first surveyed in February 2013 the rating was G, the property has climbed 2 bands since. Between certificates, roof efficiency went from Very Poor to Average, window efficiency went from Very Poor to Poor and lighting went from Good to Very Good; while wall efficiency dropped from Poor to Very Poor. The recommended improvements would lift it to C (score 74), a 2-band jump. Main heating runs on electricity. At 98 m² this is the 4th smallest of 5 units on EPC record in the building, where floor areas span 34–110 m². The building's EPC ratings span E to B, with this unit at the bottom. On EPC score it ranks last in the building (50 versus a best of 83).

At 98 m² the property is well over the postcode median (49 m² across 14 EPCs), placing it in the larger end of the local stock. On energy efficiency it sits in the bottom 10% of properties in this postcode — significant headroom for improvement. Today's modelled estimate of £1,474,000 is 13.4% above the 2011 sale price. On a £-per-square-foot basis, the last sale (£1,232/sq ft) was about 139.9% above the typical sold price in the postcode. On the market in September 2011 and unlisted since — roughly 15 years.