21b, Hanley Road, Islington, London, N4 3DU

21b is a mid-terrace house in Islington, London, London (N4 3DU). It has a recorded floor area of 99 m² (around 1066 sq ft) and construction records dating it to before 1900. The latest certificate (February 2026) shows a C (score 79), near the top of the C band. When first surveyed in November 2013 the rating was D, the property has climbed 1 band since. Between certificates, wall efficiency went from Very Poor to Good and window efficiency went from Very Poor to Good. This certificate was lodged in the last six months, so the rating reflects current condition. At 99 m² this is the 33rd smallest of 37 units on EPC record in the building, where floor areas span 33–146 m². The building's EPC ratings span D to B across 37 units on file.

At 99 m² the property is well over the postcode median (54 m² across 94 EPCs), placing it in the larger end of the local stock. Today's modelled estimate of £666,000 is 14.8% above the 2024 sale price. On a £-per-square-foot basis, the last sale (£544/sq ft) was about 38.1% above the typical sold price in the postcode. Last sale on file: £580,000 in November 2024.