Flat 4, 35 Semilong Road, Northampton, NN2 6BT

Flat 4 is a one-bedroom end-of-terrace house in Northampton (NN2 6BT). It has a recorded floor area of 35 m² (around 376 sq ft), construction records dating it to before 1900 and council tax band A. The latest certificate (April 2010) shows a G (score 20), near the bottom of the EPC scale. The recommended improvements would push it to F (score 21). Main heating runs on electricity. The latest certificate is from April 2010, so improvements made since then won't be reflected. At 35 m² this is the 2nd smallest of 4 units on EPC record in the building, where floor areas span 25–40 m². The building's EPC ratings span G to D, with this unit at the bottom. On EPC score it ranks last in the building (20 versus a best of 68).

At 35 m² it's 15.9% smaller than the typical home in the postcode (42 m² median across 38 EPCs). On energy efficiency it sits in the bottom 10% of properties in this postcode — significant headroom for improvement. Today's modelled estimate of £104,000 sits 54.1% above the 2016 sale of £67,500. On a £-per-square-foot basis, the last sale (£180/sq ft) was about 63.3% above the typical sold price in the postcode. On the market in November 2016 and unlisted since — roughly 10 years.