220 221, Flat 11, High Street West, Sunderland, SR1 1TZ

220 221 is a mid-terrace house in Sunderland (SR1 1TZ). It has a recorded floor area of 63 m² (around 678 sq ft) and construction records dating it to 2003-2006. The latest certificate (April 2021) returns a B (score 81), comfortably above the UK average. When first surveyed in January 2010 the rating was G, the property has climbed 5 bands since. Between certificates, wall efficiency went from Very Poor to Good, roof efficiency went from Very Poor to Good and window efficiency went from Average to Good. Main heating runs on electricity. At 63 m² this is the 10th smallest of 12 units on EPC record in 220 221, where floor areas span 45–72 m². The building's EPC ratings span F to B, with this unit at the top.

It hasn't traded since June 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. At 63 m² it's 16.7% larger than the typical home in the postcode (54 m² median across 13 EPCs). On energy efficiency it sits in the top 10% of properties in this postcode.