18 20, Flat A, Friern Barnet Road, London, N11 1NA

18 20 is a mid-terrace house in London (N11 1NA). It has a recorded floor area of 35 m² (around 377 sq ft) and construction records dating it to 1900-1929. At 35 m² this is the smallest unit on EPC record across 18 20 (35–53 m²). The building's EPC ratings span D to C, with this unit at the top. The latest certificate (November 2021) shows a C (score 69), just inside the C band. The rating has held steady at C across 4 certificates since December 2008. Between certificates, lighting went from Very Poor to Good; while wall efficiency dropped from Good to Poor and window efficiency dropped from Good to Average.

Held since October 2006 — that's 20 years off the open market, well above the local norm. Across 1998–2006, sale prices on this property compounded at 13.4% per year. Today's modelled estimate of £231,000 sits 71.1% above the 2006 sale of £135,000. On a £-per-square-foot basis, the last sale (£358/sq ft) was about 132.8% above the typical sold price in the postcode. At 35 m² it sits well below the postcode median (58 m² across 20 EPCs), making it one of the more compact homes locally.