23 Aydon House, Farringdon, Sunderland, SR3 3HN

23 Aydon House is a mid-terrace house in Farringdon, Sunderland, Sunderland (SR3 3HN). It has a recorded floor area of 63 m² (around 678 sq ft), construction records dating it to 1950-1966 and council tax band A. At 63 m² this is the 2nd smallest of 12 units on EPC record in the building, where floor areas span 62–70 m². The building's EPC ratings span D to B, with this unit at the bottom. The latest certificate (April 2013) shows a D (score 68), on the cusp of jumping into the C band. Earlier certificates rated it C (March 2012); the latest reading is one band lower. Between certificates, wall efficiency dropped from Average to Poor and window efficiency dropped from Average to Poor. The recommended improvements would push it to C (score 76). The latest certificate is from April 2013, so improvements made since then won't be reflected.

It hasn't traded since November 2004, a hold of 22 years that's notably long for the area. On energy efficiency it sits in the bottom 10% of properties in this postcode — significant headroom for improvement. Today's modelled estimate of £112,000 sits 72.3% above the 2004 sale of £65,000. On a £-per-square-foot basis, the last sale (£96/sq ft) was about 38.8% above the typical sold price in the postcode.