Throgmorton House, Flat 4, 27 Elphinstone Road, Southsea, PO5 3HP

Throgmorton House is a semi-detached house in Southsea (PO5 3HP). It has a recorded floor area of 57 m² (around 614 sq ft) and construction records dating it to before 1900. At 57 m² this is the 4th smallest of 7 units on EPC record in Throgmorton House, where floor areas span 33–122 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 (56 versus a best of 72). The latest certificate (March 2024) shows a D (score 56), a step below the typical UK home. The rating has held steady at D across 3 certificates since May 2009. The recommended improvements would push it to C (score 73).

Across 2006–2013, sale prices on this property compounded at -5.2% per year. Today's modelled estimate of £166,000 sits 124.3% above the 2013 sale of £74,000. On a £-per-square-foot basis, the last sale (£121/sq ft) was about 28.5% below the postcode norm. Last sold in December 2013, so it's been off the market for around 13 years.