Flat 4, 25 Knox Road, Wellingborough, NN8 1HW

Flat 4 is an end-of-terrace house in Wellingborough (NN8 1HW). It has a recorded floor area of 54 m² (around 581 sq ft), construction records dating it to before 1900 and council tax band A. At 54 m² this is the 4th smallest of 5 units on EPC record in the building, where floor areas span 38–81 m². The building's EPC ratings span E to C, with this unit at the top. On EPC score it ranks first in the building (75 versus a worst of 46). The latest certificate (May 2023) shows a C (score 75), near the top of the C band. The rating has held steady at C across 2 certificates since September 2009. Between certificates, lighting went from Good to Very Good and main heating went from Poor to Average; while window efficiency dropped from Good to Average and hot-water efficiency dropped from Poor to Very Poor. Main heating runs on electricity.

At 54 m² it sits well below the postcode median (81 m² across 29 EPCs), making it one of the more compact homes locally. Its energy rating outperforms most of the postcode (better than 76% of similar EPCs). One planning record on file: an extension approved in 2007. Past consents include an extension and change of use to residential, meaningful when judging how the property has evolved.