10a, Barrington Road, Horsham, RH13 5SN

10a is a one-bedroom semi-detached house in Horsham (RH13 5SN). It has a recorded floor area of 38 m² (around 409 sq ft), construction records dating it to 1900-1929 and council tax band B. At 38 m² this is the smallest unit on EPC record across the building (38–134 m²). The building's EPC ratings span E to B across 38 units on file. The latest certificate (June 2020) shows a D (score 66), on the cusp of jumping into the C band. When first surveyed in July 2012 the rating was F, the property has climbed 2 bands since. Between certificates, wall efficiency went from Very Poor to Poor, hot-water efficiency went from Very Poor to Good and lighting went from Average to Very Good. The recommended improvements would push it to C (score 72).

At 38 m² it sits well below the postcode median (87 m² across 37 EPCs), making it one of the more compact homes locally. Last changed hands 14 years ago, in November 2012. Across the public record there are 4 sales, relatively high churn for a single property. Across 1998–2012, sale prices on this property compounded at 8.6% per year. Today's modelled estimate of £189,000 is 38% above the 2012 sale price. On a £-per-square-foot basis, the last sale (£335/sq ft) was about 40.5% above the typical sold price in the postcode.