140a, Westpole Avenue, Cockfosters, Barnet, EN4 0AR

140a is a two-bedroom detached house in Cockfosters, Barnet, Barnet (EN4 0AR). It has a recorded floor area of 55 m² (around 592 sq ft) and construction records dating it to 1930-1949. At 55 m² this is the smallest unit on EPC record across the building (55–218 m²). The building's EPC ratings span F to C across 12 units on file. The latest certificate (November 2019) shows a D (score 67), on the cusp of jumping into the C band. The rating has held steady at D across 2 certificates since December 2014. Between certificates, wall efficiency went from Very Poor to Poor and window efficiency went from Average to Good. The recommended improvements would push it to C (score 74).

At 55 m² it sits well below the postcode median (155 m² across 11 EPCs), making it one of the more compact homes locally. Last sale on file: £373,000 in January 2020. Across the public record there are 5 sales, relatively high churn for a single property. Across 2007–2020, sale prices on this property compounded at -1.8% per year. Today's modelled estimate of £464,000 is 24.4% above the 2020 sale price. On a £-per-square-foot basis, the last sale (£630/sq ft) was about 59.4% above the typical sold price in the postcode.