9 Barnsbury Avenue, Aylesbury, HP20 1NL

9 Barnsbury Avenue is a one-bedroom semi-detached house in Aylesbury (HP20 1NL). It has a recorded floor area of 43 m² (around 463 sq ft), construction records dating it to 1950-1966 and council tax band B. The latest certificate (May 2019) shows an E (score 50), well below the UK norm with real room to improve. The rating has held steady at E across 2 certificates since December 2008. Between certificates, main heating went from Poor to Average; while hot-water efficiency dropped from Poor to Very Poor. The recommended improvements would lift it to C (score 75), a 2-band jump. Main heating runs on electricity. At 43 m² this is the 5th smallest of 29 units on EPC record in the building, where floor areas span 38–120 m². The building's EPC ratings span F to C across 29 units on file.

It hasn't traded since December 2002, a hold of 24 years that's notably long for the area. Today's modelled estimate of £160,000 sits 81.8% above the 2002 sale of £88,000. At 43 m² it sits well below the postcode median (70 m² across 28 EPCs), making it one of the more compact homes locally. It lags the bulk of the postcode on energy efficiency (less efficient than 82% of similar EPCs). One historical planning record sits against the property in 2003.