1 Herons Lea, Sheldon Avenue, Haringey, London, N6 4NB

1 Herons Lea is a two-bedroom semi-detached house in Haringey, London, London (N6 4NB). It has a recorded floor area of 79 m² (around 850 sq ft), construction records dating it to 1976-1982 and council tax band E. The latest certificate (February 2020) shows an E (score 46), well below the UK norm with real room to improve. When first surveyed in September 2009 the rating was F, the property has climbed 1 band since. Between certificates, window efficiency went from Poor to Average, hot-water efficiency went from Poor to Average and lighting went from Very Poor to Very Good; while wall efficiency dropped from Good to Average. The recommended improvements would lift it to C (score 76), a 2-band jump. Main heating runs on electricity. At 79 m² this is the 3rd smallest of 16 units on EPC record in the building, where floor areas span 55–112 m². The building's EPC ratings span E to C, with this unit at the bottom. On EPC score it ranks last in the building (46 versus a best of 75).

It lags the bulk of the postcode on energy efficiency (less efficient than 87% of similar EPCs). Across 1995–2013, sale prices on this property compounded at 10.4% per year. Today's modelled estimate of £601,000 is 26.5% above the 2013 sale price. On a £-per-square-foot basis, the last sale (£559/sq ft) was about 55.5% above the typical sold price in the postcode. Last sold in February 2013, so it's been off the market for around 13 years.