3 Colvin Road, Thornton Heath, CR7 6AB

3 Colvin Road is a one-bedroom end-of-terrace house in Thornton Heath (CR7 6AB). It has a recorded floor area of 52 m² (around 560 sq ft), construction records dating it to 1930-1949 and council tax band B. At 52 m² this is the smallest unit on EPC record across the building (52–158 m²). The building's EPC ratings span E to D, with this unit at the bottom. On EPC score it ranks last in the building (49 versus a best of 67). The latest certificate (October 2019) shows an E (score 49), well below the UK norm with real room to improve. Earlier certificates rated it D (May 2010); the latest reading is one band lower. Between certificates, lighting went from Very Poor to Very Good; while roof efficiency dropped from Poor to Very Poor. The recommended improvements would push it to D (score 66).

It hasn't traded since September 2007, a hold of 19 years that's notably long for the area. Across the public record there are 4 sales, relatively high churn for a single property. That sale landed at the peak of the pre-credit-crunch market, which is a useful reference point when interpreting the price. Sale prices here have outpaced England HPI: 19% per year against 0% for the wider region. Today's modelled estimate of £208,000 is 43.4% above the 2007 sale price. On a £-per-square-foot basis, the last sale (£259/sq ft) was about 25.9% below the postcode norm. At 52 m² it sits well below the postcode median (95 m² across 14 EPCs), making it one of the more compact homes locally. It lags the bulk of the postcode on energy efficiency (less efficient than 79% of similar EPCs). 1 bedrooms is on the smaller side for this postcode, where 3 is the typical count.