Flat 5, 21 Kingsdowne Road, Surbiton, KT6 6JZ

Flat 5 is a two-bedroom end-of-terrace house in Surbiton (KT6 6JZ). It has a recorded floor area of 51 m² (around 549 sq ft), construction records dating it to 1900-1929 and council tax band C. At 51 m² this is the smallest unit on EPC record across the building (51–106 m²). The building's EPC ratings span E to C across 6 units on file. The latest certificate (September 2015) shows a D (score 60), on the cusp of jumping into the C band. The recommended improvements would push it to C (score 75). The latest certificate is from September 2015, so improvements made since then won't be reflected.

At 51 m² it sits well below the postcode median (197 m² across 15 EPCs), making it one of the more compact homes locally. Across 2011–2016, sale prices on this property compounded at 12.2% per year. On a £-per-square-foot basis, the last sale (£746/sq ft) was about 124.8% above the typical sold price in the postcode. Last sold in February 2016, so it's been off the market for around 10 years.