12a, Belmont Close, Cockfosters, Barnet, EN4 9LS

12a is a three-bedroom mid-terrace house in Cockfosters, Barnet, Barnet (EN4 9LS). It has a recorded floor area of 77 m² (around 829 sq ft), construction records dating it to 1930-1949 and council tax band D. At 77 m² this is the 22nd smallest of 31 units on EPC record in the building, where floor areas span 52–95 m². The building's EPC ratings span E to C, with this unit at the top. The home occupies a cul-de-sac position. The latest certificate (December 2015) shows a C (score 70). When first surveyed in June 2014 the rating was D, the property has climbed 1 band since. Between certificates, window efficiency went from Very Poor to Average and lighting went from Very Poor to Very Good; while wall efficiency dropped from Poor to Very Poor. The latest certificate is from December 2015, so improvements made since then won't be reflected.

At 77 m² it's 26.2% larger than the typical home in the postcode (61 m² median across 30 EPCs). On a £-per-square-foot basis, the last sale (£624/sq ft) was about 103% above the typical sold price in the postcode. Last sold in June 2017, so it's been off the market for around 9 years.