4 Quayside, Merchants Quay, Blackburn, BB1 1EQ

4 Quayside is a one-bedroom mid-terrace house in Blackburn (BB1 1EQ). It has a recorded floor area of 49 m² (around 527 sq ft), construction records dating it to 1991-1995 and council tax band A. At 49 m² this is the 4th smallest of 9 units on EPC record in the building, where floor areas span 36–56 m². The building's EPC ratings span D to C, with this unit at the bottom. Other recorded features include a balcony. The latest certificate (April 2014) shows a D (score 68), on the cusp of jumping into the C band. The rating has held steady at D across 3 certificates since April 2010. Between certificates, hot-water efficiency went from Very Poor to Poor, lighting went from Very Poor to Average and main heating went from Poor to Average; while wall efficiency dropped from Good to Poor and window efficiency dropped from Good to Average. The recommended improvements would push it to C (score 80). Main heating runs on electricity. The latest certificate is from April 2014, so improvements made since then won't be reflected.

It hasn't traded since June 2006, a hold of 20 years that's notably long for the area. It lags the bulk of the postcode on energy efficiency (less efficient than 75% of similar EPCs). Across 1996–2006, sale prices on this property compounded at 8.1% per year. Today's modelled estimate of £102,000 is 45.7% above the 2006 sale price. On a £-per-square-foot basis, the last sale (£133/sq ft) was about 91.7% above the typical sold price in the postcode.