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

23a is a two-bedroom mid-terrace house in Newcastle Upon Tyne (NE1 3UG). It has a recorded floor area of 67 m² (around 721 sq ft), construction records dating it to 1900-1929 and council tax band B. The latest certificate (August 2018) shows a C (score 79), near the top of the C band. When first surveyed in February 2011 the rating was D, the property has climbed 1 band since. Between certificates, wall efficiency went from Very Poor to Poor, window efficiency went from Poor to Good and hot-water efficiency went from Average to Good. The recommended improvements would push it to B (score 82). At 67 m² this is the 13th 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.

One historical planning record sits against the property in 2016. The record references listed-building consent, which constrain future alterations. Across 2016–2019, sale prices on this property compounded at 8.7% per year. Today's modelled estimate of £189,000 is 10.1% above the 2019 sale price. On a £-per-square-foot basis, the last sale (£238/sq ft) was about 54.1% above the typical sold price in the postcode. Most recent transfer: October 2019 at £171,689.