16a, Fillebrook Avenue, Enfield, EN1 3BB

16a is a two-bedroom mid-terrace house in Enfield (EN1 3BB). It has a recorded floor area of 52 m² (around 560 sq ft), construction records dating it to 1950-1966 and council tax band B. At 52 m² this is the smallest unit on EPC record across the building (52–137 m²). The building's EPC ratings span E to D, with this unit at the top. On EPC score it ranks first in the building (67 versus a worst of 41). The latest certificate (November 2017) shows a D (score 67), on the cusp of jumping into the C band. The recommended improvements would push it to C (score 74).

Held since February 2005 — that's 21 years off the open market, well above the local norm. Across 2001–2005, sale prices on this property compounded at 13.1% per year. Today's modelled estimate of £343,000 sits 71.5% above the 2005 sale of £200,000. On a £-per-square-foot basis, the last sale (£357/sq ft) was about 83% above the typical sold price in the postcode. At 52 m² it sits well below the postcode median (79 m² across 10 EPCs), making it one of the more compact homes locally.