6 Corris Green, Snowdon Drive, Barnet, London, NW9 7RG

6 Corris Green is an end-of-terrace house in Barnet, London, London (NW9 7RG). It has a recorded floor area of 24 m² (around 258 sq ft), construction records dating it to 1983-1990 and council tax band B. At 24 m² this is the smallest unit on EPC record across the building (24–65 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). The latest certificate (December 2019) shows an E (score 50), well below the UK norm with real room to improve. Earlier certificates rated it D (April 2009); the latest reading is one band lower. Between certificates, lighting went from Average to Very Good; while hot-water efficiency dropped from Good to Very Poor. The recommended improvements would lift it to B (score 82), a 3-band jump. Main heating runs on to be used only when there is no heating/hot.

It hasn't traded since September 2009, a hold of 17 years that's notably long for the area. That sale fell during the post-crash dip, which often skews comparisons against later neighbouring sales. At 24 m² it's 20% smaller than the typical home in the postcode (30 m² median across 22 EPCs). On energy efficiency it sits in the bottom 10% of properties in this postcode — significant headroom for improvement. Sale prices here have lagged London HPI: -1.5% per year against 0% for the wider region. Today's modelled estimate of £170,000 sits 60.4% above the 2009 sale of £106,000. On a £-per-square-foot basis, the last sale (£410/sq ft) was about 22.3% above the typical sold price in the postcode.