155a, Upper Tooting Road, Wandsworth, London, SW17 7TJ

155a is a mid-terrace house in Wandsworth, London, London (SW17 7TJ). It has a recorded floor area of 25 m² (around 269 sq ft) and construction records dating it to 1900-1929. At 25 m² this is the smallest unit on EPC record across the building (25–96 m²). The building's EPC ratings span E to C, with this unit at the bottom. On EPC score it ranks last in the building (45 versus a best of 77). The latest certificate (June 2025) shows an E (score 45), well below the UK norm with real room to improve. The rating has held steady at E across 3 certificates since October 2016. Between certificates, window efficiency went from Very Poor to Average and lighting went from Average to Very Good; while hot-water efficiency dropped from Good to Very Poor and main heating dropped from Good to Very Poor. The recommended improvements would lift it to C (score 77), a 2-band jump. Main heating runs on electricity.

Today's modelled estimate of £256,000 is 10.2% below the 2021 sale of £285,000, an unusual pattern given regional price growth and worth checking against the EPC condition. On a £-per-square-foot basis, the last sale (£1,059/sq ft) was about 207.3% above the typical sold price in the postcode. At 25 m² it sits well below the postcode median (53 m² across 33 EPCs), making it one of the more compact homes locally. On energy efficiency it sits in the bottom 10% of properties in this postcode — significant headroom for improvement. Sold June 2021 for £285,000. That sale was during the post-pandemic price surge, when transactions cleared materially above pre-2020 trend.