Flat 4, 4 Northumberland Road, New Barnet, Barnet, EN5 1ED

Flat 4 is a two-bedroom semi-detached house in New Barnet, Barnet, Barnet (EN5 1ED). It has a recorded floor area of 48 m² (around 517 sq ft), construction records dating it to 1996-2002 and council tax band D. At 48 m² this is the smallest unit on EPC record across the building (48–239 m²). The building's EPC ratings span F to C, with this unit at the top. On EPC score it ranks first in the building (75 versus a worst of 27). The latest certificate (October 2022) shows a C (score 75), near the top of the C band. When first surveyed in February 2013 the rating was E, the property has climbed 2 bands since. Between certificates, wall efficiency went from Very Poor to Good, roof efficiency went from Very Poor to Average and window efficiency went from Poor to Average.

At 48 m² it sits well below the postcode median (170 m² across 24 EPCs), making it one of the more compact homes locally. Its energy rating outperforms most of the postcode (better than 79% of similar EPCs). Last changed hands 12 years ago, in January 2014. Across the public record there are 4 sales, relatively high churn for a single property. Across 1996–2014, sale prices on this property compounded at 8.6% per year. Today's modelled estimate of £327,000 is 30.8% above the 2014 sale price. On a £-per-square-foot basis, the last sale (£484/sq ft) was about 46.5% above the typical sold price in the postcode.