Grove House, Flat 1, Cottage Grove, Southsea, PO5 1EL

Grove House is a three-bedroom detached house in Southsea (PO5 1EL). It has a recorded floor area of 77 m² (around 829 sq ft), construction records dating it to 1967-1975 and council tax band B. At 77 m² this is the 2nd smallest of 3 units on EPC record in Grove House, where floor areas span 73–77 m². The building's EPC ratings span D to C, with this unit at the bottom. On EPC score it ranks last in the building (66 versus a best of 71). The latest certificate (March 2023) shows a D (score 66), on the cusp of jumping into the C band. The rating has held steady at D across 2 certificates since March 2013. Between certificates, hot-water efficiency went from Average to Good; while lighting dropped from Very Good to Good. The recommended improvements would push it to C (score 74).

It hasn't traded since March 1999, a hold of 27 years that's notably long for the area. Only one transfer is on record with HM Land Registry, suggesting it has stayed in the same hands for a long time. Today's modelled estimate of £202,000 sits 236.7% above the 1999 sale of £60,000. On a £-per-square-foot basis, the last sale (£72/sq ft) was about 69.5% below the postcode norm.