31f, High Street, Walton On Thames, KT12 1DG

31f is a semi-detached house in Walton On Thames (KT12 1DG). It has a recorded floor area of 33 m² (around 355 sq ft), construction records dating it to 2007-2011 and council tax band C. At 33 m² this is the smallest unit on EPC record across the building (33–95 m²). The building's EPC ratings span F to C, with this unit at the top. On EPC score it ranks first in the building (71 versus a worst of 30). The latest certificate (September 2022) shows a C (score 71). When first surveyed in February 2009 the rating was F, the property has climbed 3 bands since. Between certificates, wall efficiency went from Average to Very Good, roof efficiency went from Average to Good and lighting went from Very Poor to Very Good. The recommended improvements would push it to B (score 83). Main heating runs on electricity.

At 33 m² it sits well below the postcode median (78 m² across 9 EPCs), making it one of the more compact homes locally. On energy efficiency it sits in the top 10% of properties in this postcode. Today's modelled estimate of £192,000 sits 53.6% above the 2012 sale of £125,000. On a £-per-square-foot basis, the last sale (£352/sq ft) was about 27.2% above the typical sold price in the postcode. Last sold in March 2012, so it's been off the market for around 14 years.