17 Helena Square, Southwark, London, SE16 5XP

17 Helena Square is a two-bedroom end-of-terrace house in Southwark, London, London (SE16 5XP). It has a recorded floor area of 78 m² (around 840 sq ft), construction records dating it to 1991-1995 and council tax band F. At 78 m² this is the 23rd smallest of 31 units on EPC record in the building, where floor areas span 39–103 m². The building's EPC ratings span D to B, with this unit at the bottom. On EPC score it ranks last in the building (60 versus a best of 83). The latest certificate (July 2016) shows a D (score 60), on the cusp of jumping into the C band. The recommended improvements would push it to C (score 72). Main heating runs on electricity.

Held since July 2004 — that's 22 years off the open market, well above the local norm. At 78 m² the property is well over the postcode median (57 m² across 30 EPCs), placing it in the larger end of the local stock. On energy efficiency it sits in the bottom 10% of properties in this postcode — significant headroom for improvement. Across 1997–2004, sale prices on this property compounded at 10.1% per year. Today's modelled estimate of £486,000 sits 95.2% above the 2004 sale of £249,000. On a £-per-square-foot basis, the last sale (£297/sq ft) was about 28.7% below the postcode norm.