3a, Hartington Road, Waltham Forest, London, E17 8AS

3a is a semi-detached house in Waltham Forest, London, London (E17 8AS). It has a recorded floor area of 49 m² (around 527 sq ft) and construction records dating it to 1991-1995. At 49 m² this is the 8th smallest of 57 units on EPC record in the building, where floor areas span 41–132 m². The building's EPC ratings span F to C, with this unit at the top. On EPC score it ranks first in the building (77 versus a worst of 24). The latest certificate (October 2024) shows a C (score 77), near the top of the C band. When first surveyed in November 2014 the rating was D, the property has climbed 1 band since. Between certificates, wall efficiency went from Very Poor to Good, window efficiency went from Average to Good and lighting went from Very Poor to Very Good.

At 49 m² it sits well below the postcode median (73 m² across 56 EPCs), making it one of the more compact homes locally. Across 1999–2015, sale prices on this property compounded at 11.5% per year. Today's modelled estimate of £370,000 is 37% above the 2015 sale price. On a £-per-square-foot basis, the last sale (£512/sq ft) was about 125.1% above the typical sold price in the postcode. 11 years since the last transfer (May 2015).