Throgmorton House, Flat 2, 27 Elphinstone Road, Southsea, PO5 3HP

Throgmorton House is a two-bedroom semi-detached house in Southsea (PO5 3HP). It has a recorded floor area of 74 m² (around 797 sq ft) and construction records dating it to before 1900. At 74 m² this is the 6th 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 top. On EPC score it ranks first in the building (72 versus a worst of 56). The latest certificate (January 2019) shows a C (score 72). The rating has held steady at C across 2 certificates since January 2009. Between certificates, lighting went from Poor to Good; while hot-water efficiency dropped from Very Good to Good and main heating dropped from Very Good to Good. The recommended improvements would push it to B (score 81).

Held since February 2004 — that's 22 years off the open market, well above the local norm. At 74 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). Across 1996–2004, sale prices on this property compounded at 16% per year. Today's modelled estimate of £195,000 is 48.9% above the 2004 sale price.