4 Ennerdale Avenue, Blackburn, BB1 1QD

4 Ennerdale Avenue is a one-bedroom semi-detached house in Blackburn (BB1 1QD). It has a recorded floor area of 44 m² (around 474 sq ft), construction records dating it to 1967-1975 and council tax band A. The latest certificate (December 2022) shows a D (score 67), on the cusp of jumping into the C band. The rating has held steady at D across 2 certificates since July 2009. Between certificates, window efficiency went from Average to Good, hot-water efficiency went from Very Poor to Average and lighting went from Very Poor to Very Good; while wall efficiency dropped from Good to Average. The recommended improvements would push it to C (score 75). Main heating runs on electricity. At 44 m² this is the 19th smallest of 36 units on EPC record in the building, where floor areas span 38–84 m². The building's EPC ratings span F to C across 36 units on file.

It hasn't traded since April 2005, a hold of 21 years that's notably long for the area. Today's modelled estimate of £107,000 sits 167.5% above the 2005 sale of £40,000. On a £-per-square-foot basis, the last sale (£84/sq ft) was about 23.6% below the postcode norm. It lags the bulk of the postcode on energy efficiency (less efficient than 80% of similar EPCs).