17 Heron Close, Blackburn, BB1 8NU

17 Heron Close is a four-bedroom detached house in Blackburn (BB1 8NU). It has a recorded floor area of 107 m² (around 1152 sq ft), construction records dating it to 1983-1990 and council tax band E. The latest certificate (July 2015) shows a C (score 70). When first surveyed in September 2014 the rating was E, the property has climbed 2 bands since. Between certificates, roof efficiency went from Very Poor to Good and lighting went from Poor to Very Good; while window efficiency dropped from Good to Average. The recommended improvements would push it to B (score 83). The latest certificate is from July 2015, so improvements made since then won't be reflected.

Held since June 2002 — that's 24 years off the open market, well above the local norm. Across 1997–2002, sale prices on this property compounded at 3.2% per year. Today's modelled estimate of £340,000 sits 246.9% above the 2002 sale of £98,000. On a £-per-square-foot basis, the last sale (£85/sq ft) was about 39.5% below the postcode norm. At 107 m² it's 17.4% smaller than the typical home in the postcode (130 m² median across 20 EPCs).