3 Hercules Street, Islington, London, N7 6AT

3 Hercules Street is a mid-terrace house in Islington, London, London (N7 6AT). It has a recorded floor area of 45 m² (around 484 sq ft), construction records dating it to 1900-1929 and council tax band C. At 45 m² this is the 3rd smallest of 12 units on EPC record in the building, where floor areas span 38–148 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 (40 versus a best of 82). The latest certificate (May 2023) shows an E (score 40), well below the UK norm with real room to improve. Earlier certificates rated it D (June 2009); the latest reading is one band lower. Between certificates, window efficiency went from Average to Good and hot-water efficiency went from Very Poor to Poor; while main heating dropped from Poor to Very Poor. The recommended improvements would lift it to C (score 78), a 2-band jump. Main heating runs on electricity.

Across 1997–2015, sale prices on this property compounded at 14.6% per year. Today's modelled estimate of £382,000 is 65.3% below the 2015 sale of £1,100,000, below the original sale price, which typically signals condition or completion-status changes worth verifying. On a £-per-square-foot basis, the last sale (£2,271/sq ft) was about 738.9% above the typical sold price in the postcode. On energy efficiency it sits in the bottom 10% of properties in this postcode — significant headroom for improvement. Last sold in April 2015, so it's been off the market for around 11 years. One historical planning record sits against the property in 2018.