21 Greenway Close, Barnet, London, N11 3NS

21 Greenway Close is a two-bedroom semi-detached house in Barnet, London, London (N11 3NS). It has a recorded floor area of 49 m² (around 527 sq ft), construction records dating it to 1976-1982 and council tax band D. The latest certificate (April 2017) shows a D (score 67), on the cusp of jumping into the C band. Earlier certificates rated it C (April 2013); the latest reading is one band lower. Between certificates, roof efficiency went from Poor to Average; while wall efficiency dropped from Good to Average. The recommended improvements would push it to C (score 77). At 49 m² this is the 35th smallest of 50 units on EPC record in the building, where floor areas span 21–54 m². The building's EPC ratings span E to B across 50 units on file. Other recorded features include a loft.

At 49 m² it's 19.5% larger than the typical home in the postcode (41 m² median across 49 EPCs). On energy efficiency it sits in the bottom 10% of properties in this postcode — significant headroom for improvement. Across 2007–2017, sale prices on this property compounded at 5.3% per year. On a £-per-square-foot basis, the last sale (£607/sq ft) was about 98.8% above the typical sold price in the postcode. Last changed hands 9 years ago, in August 2017.