23 Avenue Gardens, Richmond Upon Thames, London, SW14 8BP

23 Avenue Gardens is a two-bedroom detached house in Richmond Upon Thames, London, London (SW14 8BP). It has a recorded floor area of 90 m² (around 969 sq ft), construction records dating it to 1900-1929 and council tax band D. At 90 m² this is the 2nd smallest of 21 units on EPC record in the building, where floor areas span 89–197 m². The building's EPC ratings span E to C, with this unit at the bottom. The latest certificate (September 2020) shows an E (score 44), well below the UK norm with real room to improve. Earlier certificates rated it D (July 2009); the latest reading is one band lower. Between certificates, lighting went from Average to Very Good; while window efficiency dropped from Poor to Very Poor. The recommended improvements would lift it to C (score 71), a 2-band jump.

Last sold in August 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. At 90 m² it's 27.1% smaller than the typical home in the postcode (124 m² median across 20 EPCs). It lags the bulk of the postcode on energy efficiency (less efficient than 80% of similar EPCs). Across 2001–2016, sale prices on this property compounded at 6.9% per year. On a £-per-square-foot basis, the last sale (£604/sq ft) was about 68.2% above the typical sold price in the postcode.