11a, Abington Avenue, Northampton, NN1 4NY

11a is a three-bedroom mid-terrace house in Northampton (NN1 4NY). It has a recorded floor area of 35 m² (around 377 sq ft), construction records dating it to 1900-1929 and council tax band A. At 35 m² this is the smallest unit on EPC record across the building (35–140 m²). The building's EPC ratings span F to C across 16 units on file. Other recorded features include a basement. Period features are noted in the property record. The latest certificate (June 2022) shows an E (score 48), well below the UK norm with real room to improve. The rating has held steady at E across 3 certificates since November 2008. Between certificates, window efficiency went from Poor to Average and lighting went from Very Poor to Very Good; while hot-water efficiency dropped from Good to Very Poor and main heating dropped from Good to Very Poor. The recommended improvements would lift it to C (score 69), a 2-band jump. Main heating runs on electricity.

It hasn't traded since January 2004, a hold of 22 years that's notably long for the area. At 35 m² it sits well below the postcode median (115 m² across 15 EPCs), making it one of the more compact homes locally. Across 2000–2004, sale prices on this property compounded at 19.6% per year. Today's modelled estimate of £196,000 is 35.2% above the 2004 sale price. On a £-per-square-foot basis, the last sale (£385/sq ft) was about 190% above the typical sold price in the postcode.