4a, Denham Road, Barnet, London, N20 0DN

4a is a two-bedroom end-of-terrace house in Barnet, London, London (N20 0DN). It has a recorded floor area of 50 m² (around 538 sq ft), construction records dating it to 1900-1929 and council tax band C. The latest certificate (August 2012) shows an F (score 38), near the bottom of the EPC scale. The recommended improvements would lift it to D (score 57), a 2-band jump. The latest certificate is from August 2012, so improvements made since then won't be reflected. At 50 m² this is the 2nd smallest of 12 units on EPC record in the building, where floor areas span 44–99 m². The building's EPC ratings span F to D, with this unit at the bottom. On EPC score it ranks last in the building (38 versus a best of 66). Other recorded features include a balcony.

At 50 m² it sits well below the postcode median (77 m² across 11 EPCs), making it one of the more compact homes locally. On energy efficiency it sits in the bottom 10% of properties in this postcode — significant headroom for improvement. Across 2001–2013, sale prices on this property compounded at 7.5% per year. Today's modelled estimate of £351,000 sits 75.5% above the 2013 sale of £200,000. On a £-per-square-foot basis, the last sale (£372/sq ft) was about 46.7% above the typical sold price in the postcode. One planning record on file: an extension approved in 2017. Past consents include an extension, meaningful when judging how the property has evolved. On the market in March 2013 and unlisted since — roughly 13 years.