53a, Kelsall Avenue, Blackburn, BB1 5RU

53a is a two-bedroom semi-detached house in Blackburn (BB1 5RU). It has a recorded floor area of 63 m² (around 678 sq ft), construction records dating it to 1950-1966 and council tax band A. The latest certificate (August 2015) shows an E (score 51), well below the UK norm with real room to improve. The rating has held steady at E across 2 certificates since October 2014. Between certificates, wall efficiency went from Poor to Good and lighting went from Poor to Average. The recommended improvements would lift it to C (score 79), a 2-band jump. The latest certificate is from August 2015, so improvements made since then won't be reflected. At 63 m² this is the 7th smallest of 41 units on EPC record in the building, where floor areas span 58–92 m². The building's EPC ratings span F to B across 41 units on file.

Today's modelled estimate of £99,000 sits 150.6% above the 2016 sale of £39,500. On a £-per-square-foot basis, the last sale (£58/sq ft) was about 22.4% below the postcode norm. At 63 m² it's 25% smaller than the typical home in the postcode (84 m² median across 40 EPCs). It lags the bulk of the postcode on energy efficiency (less efficient than 85% of similar EPCs). 10 years since the last transfer (March 2016).