42a, Higher Market Street, Farnworth, Bolton, BL4 9AJ

42a is a detached house in Farnworth, Bolton, Bolton (BL4 9AJ). It has a recorded floor area of 72 m² (around 770 sq ft), construction records dating it to 1900-1929 and council tax band A. The latest certificate (January 2009) shows an F (score 25), near the bottom of the EPC scale. When first surveyed in January 2009 the rating was G, the property has climbed 1 band since. Between certificates, roof efficiency went from Very Poor to Average and main heating went from Very Poor to Poor; while wall efficiency dropped from Good to Very Poor. Main heating runs on electricity. The latest certificate is from January 2009, so improvements made since then won't be reflected. At 72 m² this is the 12th smallest of 16 units on EPC record in the building, where floor areas span 35–115 m². The building's EPC ratings span G to C across 16 units on file.

It hasn't traded since April 2004, a hold of 22 years that's notably long for the area. Today's modelled estimate of £123,000 sits 86.4% above the 2004 sale of £66,000. At 72 m² it's 23.3% larger than the typical home in the postcode (58 m² median across 15 EPCs). It lags the bulk of the postcode on energy efficiency (less efficient than 87% of similar EPCs).