23b, High Street, Finedon, Wellingborough, NN9 5JN

23b is a one-bedroom detached house in Finedon, Wellingborough, Wellingborough (NN9 5JN). It has a recorded floor area of 59 m² (around 635 sq ft), construction records dating it to 1900-1929 and council tax band A. The latest certificate (March 2023) shows an E (score 54), well below the UK norm with real room to improve. The rating has held steady at E across 2 certificates since March 2009. Between certificates, roof efficiency went from Good to Very Good, window efficiency went from Very Poor to Average and lighting went from Good to Very Good; while wall efficiency dropped from Good to Poor. The recommended improvements would push it to D (score 64). Main heating runs on electricity. At 59 m² this is the 8th smallest of 46 units on EPC record in the building, where floor areas span 40–260 m². The building's EPC ratings span F to B across 46 units on file.

It hasn't traded since April 2008, a hold of 18 years that's notably long for the area. That sale landed at the peak of the pre-credit-crunch market, which is a useful reference point when interpreting the price. At 59 m² it sits well below the postcode median (98 m² across 45 EPCs), making it one of the more compact homes locally. It lags the bulk of the postcode on energy efficiency (less efficient than 76% of similar EPCs). 1 bedrooms is on the smaller side for this postcode, where 3 is the typical count. On a £-per-square-foot basis, the last sale (£346/sq ft) was about 124.3% above the typical sold price in the postcode.