28b, Heddington Grove, Islington, London, N7 9SY

28b is a two-bedroom mid-terrace house in Islington, London, London (N7 9SY). It has a recorded floor area of 55 m² (around 592 sq ft) and construction records dating it to 1983-1990. The latest certificate (July 2019) shows a D (score 68), on the cusp of jumping into the C band. Earlier certificates rated it B (October 2008); the latest reading is 2 bands lower. Between certificates, window efficiency dropped from Average to Poor and hot-water efficiency dropped from Average to Very Poor. The recommended improvements would push it to C (score 75). Main heating runs on electricity. At 55 m² this is the 29th smallest of 33 units on EPC record in the building, where floor areas span 35–115 m². The building's EPC ratings span E to B across 33 units on file. The home occupies a cul-de-sac position.

It hasn't traded since August 2003, a hold of 23 years that's notably long for the area. Across 1996–2003, sale prices on this property compounded at 25.7% per year. Today's modelled estimate of £437,000 sits 173.1% above the 2003 sale of £160,000. On a £-per-square-foot basis, the last sale (£270/sq ft) was about 22.4% below the postcode norm.