21 Largewood Avenue, Surbiton, KT6 7NU

21 Largewood Avenue is a mid-terrace house in Surbiton (KT6 7NU). It has a recorded floor area of 17 m² (around 183 sq ft), construction records dating it to 1900-1929 and council tax band D. At 17 m² this is the 5th smallest of 25 units on EPC record in the building, where floor areas span 13–110 m². The building's EPC ratings span E to C, with this unit at the top. The latest certificate (May 2024) shows a C (score 74). The rating has held steady at C across 2 certificates since October 2009. Between certificates, wall efficiency went from Very Poor to Very Good and lighting went from Very Poor to Very Good; while hot-water efficiency dropped from Very Good to Very Poor and main heating dropped from Very Good to Very Poor. Main heating runs on electricity.

Held since December 2009 — that's 16 years off the open market, well above the local norm. That sale fell during the post-crash dip, which often skews comparisons against later neighbouring sales. At 17 m² it sits well below the postcode median (84 m² across 24 EPCs), making it one of the more compact homes locally. 2 planning records sit against the property, 2 approved, 0 refused. Past consents include a loft conversion, meaningful when judging how the property has evolved. Across 1996–2009, sale prices on this property compounded at 9% per year. Today's modelled estimate of £391,000 is 44.8% above the 2009 sale price. On a £-per-square-foot basis, the last sale (£1,476/sq ft) was about 407.2% above the typical sold price in the postcode.