16 High Street, Portsmouth, PO1 2LP

16 High Street is a mid-terrace house in Portsmouth (PO1 2LP). It has a recorded floor area of 81 m² (around 872 sq ft) and construction records dating it to before 1900. The latest certificate (November 2019) shows a G (score 13), near the bottom of the EPC scale. Earlier certificates rated it F (December 2011); the latest reading is one band lower. Between certificates, wall efficiency went from Very Poor to Poor; while lighting dropped from Poor to Very Poor. The recommended improvements would lift it to C (score 80), a 4-band jump. Main heating runs on electricity. At 81 m² this is the 7th smallest of 17 units on EPC record in the building, where floor areas span 42–267 m². The building's EPC ratings span G to C, with this unit at the bottom. On EPC score it ranks last in the building (13 versus a best of 76).

It hasn't traded since April 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 81 m² it sits well below the postcode median (132 m² across 16 EPCs), making it one of the more compact homes locally. On energy efficiency it sits in the bottom 10% of properties in this postcode — significant headroom for improvement. 7 planning records sit against the property, 0 approved, 2 refused. The record references listed-building consent, which constrain future alterations. On a £-per-square-foot basis, the last sale (£573/sq ft) was about 167.2% above the typical sold price in the postcode.