Flat 1, 148 Burnt Ash Hill, Lewisham, London, SE12 0HU

Flat 1 is a one-bedroom end-of-terrace house in Lewisham, London, London (SE12 0HU). It has a recorded floor area of 40 m² (around 431 sq ft), construction records dating it to 1983-1990 and council tax band B. At 40 m² this is the smallest unit on EPC record across the building (40–146 m²). The building's EPC ratings span E to B, with this unit at the bottom. The latest certificate (October 2018) shows an E (score 44), well below the UK norm with real room to improve. The rating has held steady at E across 2 certificates since November 2008. Between certificates, wall efficiency went from Poor to Good and lighting went from Poor to Good; while hot-water efficiency dropped from Poor to Very Poor and main heating dropped from Poor to Very Poor. The recommended improvements would push it to D (score 57). Main heating runs on electricity.

Sale prices here have lagged London HPI: -10.8% per year against 0% for the wider region. Today's modelled estimate of £233,000 sits 2230% above the 2025 sale of £10,000. On a £-per-square-foot basis, the last sale (£23/sq ft) was about 89.1% below the postcode norm. It changed hands recently, sold June 2025 for £10,000. Across the public record there are 5 sales, relatively high churn for a single property. At 40 m² it sits well below the postcode median (74 m² across 23 EPCs), making it one of the more compact homes locally. It lags the bulk of the postcode on energy efficiency (less efficient than 87% of similar EPCs).