10a, Claremont Gardens, Surbiton, KT6 4TN

10a is a semi-detached house in Surbiton (KT6 4TN). It has a recorded floor area of 41 m² (around 441 sq ft) and construction records dating it to 1900-1929. At 41 m² this is the 2nd smallest of 9 units on EPC record in 10a, where floor areas span 38–59 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 (53 versus a best of 65). The latest certificate (August 2019) shows an E (score 53), well below the UK norm with real room to improve. The rating has held steady at E across 2 certificates since February 2014. Between certificates, wall efficiency went from Very Poor to Poor. The recommended improvements would lift it to C (score 74), a 2-band jump.

Today's modelled estimate of £280,000 sits 438.5% above the 2020 sale of £52,000. On a £-per-square-foot basis, the last sale (£118/sq ft) was about 69.9% below the postcode norm. 4 planning records sit against the property, 2 approved, 0 refused. Past consents include tree works, meaningful when judging how the property has evolved. The record references conservation-area consent, which constrain future alterations. At 41 m² it's 22.6% smaller than the typical home in the postcode (53 m² median across 55 EPCs). It lags the bulk of the postcode on energy efficiency (less efficient than 87% of similar EPCs). Sold July 2020 for £52,000.