15 Green Walk, Southwark, London, SE1 4TU

15 Green Walk is a detached house in Southwark, London, London (SE1 4TU). It has a recorded floor area of 79 m² (around 850 sq ft), construction records dating it to 2012 onwards and council tax band A. The latest certificate (August 2023) returns a B (score 82), comfortably above the UK average. When first surveyed in May 2010 the rating was D, the property has climbed 2 bands since. Between certificates, wall efficiency went from Poor to Very Good; while window efficiency dropped from Good to Average and hot-water efficiency dropped from Good to Average. Main heating runs on electricity. At 79 m² this is the 20th smallest of 24 units on EPC record in the building, where floor areas span 43–83 m². The building's EPC ratings span E to B, with this unit at the top.

Today's modelled estimate of £278,000 is 57.2% below the 2015 sale of £650,000, a rare downward gap that often correlates with deferred maintenance or unfinished works. On a £-per-square-foot basis, the last sale (£764/sq ft) was about 42.6% above the typical sold price in the postcode. At 79 m² the property is well over the postcode median (51 m² across 23 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). On the market in November 2015 and unlisted since — roughly 11 years.