19j, Catherine Road, Surbiton, KT6 4HA

19j is a semi-detached house in Surbiton (KT6 4HA). It has a recorded floor area of 45 m² (around 484 sq ft), construction records dating it to 1900-1929 and council tax band C. The latest certificate (June 2019) shows a D (score 66), on the cusp of jumping into the C band. The rating has held steady at D across 2 certificates since July 2009. Between certificates, window efficiency went from Very Poor to Average and lighting went from Poor to Good. The recommended improvements would push it to C (score 76). At 45 m² this is the 9th smallest of 34 units on EPC record in the building, where floor areas span 34–345 m². The building's EPC ratings span G to C across 34 units on file.

At 45 m² it sits well below the postcode median (77 m² across 33 EPCs), making it one of the more compact homes locally. Last sold in March 2016, so it's been off the market for around 10 years. Across the public record there are 4 sales, relatively high churn for a single property. Across 1996–2016, sale prices on this property compounded at 10.2% per year. On a £-per-square-foot basis, the last sale (£661/sq ft) was about 97.8% above the typical sold price in the postcode.