17b, Borough Road, Sunderland, SR1 1EQ

17b is an end-of-terrace house in Sunderland (SR1 1EQ). It has a recorded floor area of 34 m² (around 366 sq ft), construction records dating it to 1900-1929 and council tax band A. The latest certificate (March 2022) shows an E (score 50), well below the UK norm with real room to improve. When first surveyed in December 2008 the rating was F, the property has climbed 1 band since. Between certificates, wall efficiency went from Very Poor to Poor and lighting went from Poor to Very Good; while hot-water efficiency dropped from Average to Poor and main heating dropped from Poor to Very Poor. The recommended improvements would lift it to B (score 82), a 3-band jump. Main heating runs on electricity. At 34 m² this is the 3rd smallest of 9 units on EPC record in the building, where floor areas span 32–93 m². The building's EPC ratings span E to C, with this unit at the bottom. On EPC score it ranks last in the building (50 versus a best of 73).

Held since June 2008 — that's 18 years off the open market, well above the local norm. 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 £116,000 sits 50.6% above the 2008 sale of £77,000. On a £-per-square-foot basis, the last sale (£210/sq ft) was about 30.1% above the typical sold price in the postcode. At 34 m² it's 21.8% smaller than the typical home in the postcode (44 m² median across 8 EPCs).