Flat 3, 51 Semilong Road, Northampton, NN2 6BT

Flat 3 is a two-bedroom mid-terrace house in Northampton (NN2 6BT). It has a recorded floor area of 80 m² (around 861 sq ft), construction records dating it to 1900-1929 and council tax band A. At 80 m² this is the largest unit on EPC record across the building (40–80 m²). The building's EPC ratings span E to D, with this unit at the bottom. On EPC score it ranks last in the building (45 versus a best of 66). The latest certificate (March 2020) shows an E (score 45), well below the UK norm with real room to improve. When first surveyed in July 2009 the rating was F, the property has climbed 1 band since. Between certificates, lighting went from Poor to Very Good and main heating went from Poor to Average. The recommended improvements would lift it to C (score 79), a 2-band jump. Main heating runs on electricity.

It hasn't traded since March 2003, a hold of 23 years that's notably long for the area. At 80 m² the property is well over the postcode median (41 m² across 38 EPCs), placing it in the larger end of the local stock. It lags the bulk of the postcode on energy efficiency (less efficient than 84% of similar EPCs). Today's modelled estimate of £142,000 sits 175.7% above the 2003 sale of £51,500. On a £-per-square-foot basis, the last sale (£60/sq ft) was about 51.5% below the postcode norm.