17 Altrincham Tower, Sunderland, SR3 3AP

17 Altrincham Tower is a semi-detached house in Sunderland (SR3 3AP). 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. At 44 m² this is the smallest unit on EPC record across the building (44–64 m²). The building's EPC ratings span C to B, with this unit at the bottom. On EPC score it ranks last in the building (71 versus a best of 85). The latest certificate (May 2016) shows a C (score 71). The rating has held steady at C across 2 certificates since January 2014. Between certificates, wall efficiency dropped from Good to Very Poor and lighting dropped from Very Good to Average. The latest certificate is from May 2016, so improvements made since then won't be reflected.

It hasn't traded since August 2007, a hold of 19 years that's notably long for the area. That sale landed at the peak of the pre-credit-crunch market, which is a useful reference point when interpreting the price. Today's modelled estimate of £107,000 sits 57.4% above the 2007 sale of £68,000. On a £-per-square-foot basis, the last sale (£144/sq ft) was about 148.1% above the typical sold price in the postcode. At 44 m² it's 27.9% smaller than the typical home in the postcode (61 m² median across 47 EPCs). It lags the bulk of the postcode on energy efficiency (less efficient than 72% of similar EPCs).