155a, Hersham Road, Hersham, Walton On Thames, KT12 5NR

155a is a semi-detached house in Hersham, Walton-On-Thames, Walton On Thames (KT12 5NR). It has a recorded floor area of 27 m² (around 291 sq ft), construction records dating it to 1900-1929 and council tax band B. At 27 m² this is the smallest unit on EPC record across the building (27–198 m²). The building's EPC ratings span G to C, with this unit at the bottom. On EPC score it ranks last in the building (20 versus a best of 80). The latest certificate (July 2013) shows a G (score 20), near the bottom of the EPC scale. The recommended improvements would lift it to D (score 64), a 3-band jump. Main heating runs on electricity. The latest certificate is from July 2013, so improvements made since then won't be reflected.

At 27 m² it sits well below the postcode median (106 m² across 17 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. Last changed hands 13 years ago, in August 2013. Across the public record there are 4 sales, relatively high churn for a single property. Across 1998–2013, sale prices on this property compounded at 2.6% per year. Today's modelled estimate of £204,000 is 38.3% above the 2013 sale price. On a £-per-square-foot basis, the last sale (£508/sq ft) was about 26.5% above the typical sold price in the postcode.