Throgmorton House, Flat 1, 27 Elphinstone Road, Southsea, PO5 3HP

Throgmorton House is a three-bedroom detached house in Southsea (PO5 3HP). It has a recorded floor area of 122 m² (around 1313 sq ft) and construction records dating it to 1900-1929. At 122 m² this is the largest unit on EPC record across Throgmorton House (33–122 m²). The building's EPC ratings span D to C, with this unit at the top. The latest certificate (September 2024) shows a C (score 70). When first surveyed in March 2013 the rating was D, the property has climbed 1 band since. Between certificates, lighting went from Average to Very Good.

At 122 m² the property is well over the postcode median (54 m² across 39 EPCs), placing it in the larger end of the local stock. Its energy rating outperforms most of the postcode (better than 74% of similar EPCs). Most recent transfer was March 2025 at £332,500 — fresh data. Across 2002–2025, sale prices on this property compounded at 6.6% per year. On a £-per-square-foot basis, the last sale (£253/sq ft) was about 45.8% above the typical sold price in the postcode.