71a, Edith Street, Northampton, NN1 5EP

71a is a mid-terrace house in Northampton (NN1 5EP). It has a recorded floor area of 51 m² (around 549 sq ft), construction records dating it to 1900-1929 and council tax band A. The latest certificate (October 2019) shows an E (score 39), well below the UK norm with real room to improve. When first surveyed in October 2008 the rating was F, the property has climbed 1 band since. Between certificates, roof efficiency went from Average to Good, window efficiency went from Poor to Average and lighting went from Average to Very Good; while hot-water efficiency dropped from Poor to Very Poor. The recommended improvements would push it to D (score 64). Main heating runs on electricity. At 51 m² this is the 18th smallest of 49 units on EPC record in the building, where floor areas span 28–111 m². The building's EPC ratings span E to B, with this unit at the bottom. On EPC score it ranks last in the building (39 versus a best of 81).

Across 1999–2019, sale prices on this property compounded at 7.9% per year. Today's modelled estimate of £139,000 is 24.9% below the 2019 sale of £185,000, below the original sale price, which typically signals condition or completion-status changes worth verifying. On a £-per-square-foot basis, the last sale (£337/sq ft) was about 160% above the typical sold price in the postcode. At 51 m² it sits well below the postcode median (77 m² across 48 EPCs), making it one of the more compact homes locally. It lags the bulk of the postcode on energy efficiency (less efficient than 90% of similar EPCs). Most recent transfer: October 2019 at £185,000.