23 St Peters Court, St Peters Street, Northampton, NN1 1SH

23 St Peters Court is a one-bedroom semi-detached house in Northampton (NN1 1SH). It has a recorded floor area of 56 m² (around 603 sq ft), construction records dating it to 1950-1966 and council tax band A. At 56 m² this is the 34th smallest of 36 units on EPC record in the building, where floor areas span 33–65 m². The building's EPC ratings span E to B, with this unit at the bottom. The latest certificate (December 2019) shows an E (score 53), well below the UK norm with real room to improve. Earlier certificates rated it C (January 2009); the latest reading is 2 bands lower. Between certificates, main heating went from Poor to Average; while wall efficiency dropped from Good to Poor and hot-water efficiency dropped from Average to Poor. The recommended improvements would lift it to C (score 75), a 2-band jump. Main heating runs on electricity.

It hasn't traded since February 2007, a hold of 19 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 56 m² the property is well over the postcode median (39 m² across 35 EPCs), placing it in the larger end of the local stock. It lags the bulk of the postcode on energy efficiency (less efficient than 86% of similar EPCs). Across 1996–2007, sale prices on this property compounded at 10% per year. Today's modelled estimate of £123,000 sits 64% above the 2007 sale of £75,000. On a £-per-square-foot basis, the last sale (£124/sq ft) was about 16% above the typical sold price in the postcode.