23h, Queen Street, Newcastle Upon Tyne, NE1 3UG

23h is a mid-terrace house in Newcastle Upon Tyne (NE1 3UG). It has a recorded floor area of 70 m² (around 753 sq ft) and construction records dating it to before 1900. The latest certificate (September 2024) shows an E (score 52), well below the UK norm with real room to improve. Earlier certificates rated it D (October 2008); the latest reading is one band lower. Between certificates, wall efficiency went from Very Poor to Poor, window efficiency went from Poor to Good and lighting went from Very Poor to Good; while hot-water efficiency dropped from Average to Very Poor and main heating dropped from Average to Very Poor. The recommended improvements would lift it to C (score 69), a 2-band jump. Main heating runs on electricity. At 70 m² this is the 17th smallest of 42 units on EPC record in the building, where floor areas span 35–153 m². The building's EPC ratings span G to B across 42 units on file.

Today's modelled estimate of £148,000 sits 51.8% above the 2021 sale of £97,500. On a £-per-square-foot basis, the last sale (£129/sq ft) was about 19.5% below the postcode norm. It lags the bulk of the postcode on energy efficiency (less efficient than 71% of similar EPCs). Sold November 2021 for £97,500. That sale was during the post-pandemic price surge, when transactions cleared materially above pre-2020 trend.