307a, High Road Leytonstone, Waltham Forest, London, E11 4JT

307a is a mid-terrace house in Waltham Forest, London, London (E11 4JT). It has a recorded floor area of 62 m² (around 667 sq ft) and construction records dating it to 1930-1949. The latest certificate (August 2025) shows a D (score 67), on the cusp of jumping into the C band. The rating has held steady at D across 2 certificates since June 2015. Between certificates, roof efficiency went from Poor to Average and lighting went from Average to Good; while window efficiency dropped from Average to Poor. The recommended improvements would push it to C (score 72). At 62 m² this is the 28th smallest of 41 units on EPC record in the building, where floor areas span 20–117 m². The building's EPC ratings span E to C across 41 units on file.

It hasn't traded since March 2007, a hold of 19 years that's notably long for the area. That sale landed at the peak of the pre-credit-crunch market, which is a useful reference point when interpreting the price. At 62 m² the property is well over the postcode median (47 m² across 53 EPCs), placing it in the larger end of the local stock. Across 2001–2007, sale prices on this property compounded at 23% per year. Today's modelled estimate of £483,000 sits 78.9% above the 2007 sale of £270,000. On a £-per-square-foot basis, the last sale (£405/sq ft) was about 76.1% above the typical sold price in the postcode.