30c, Cadogan Road, Surbiton, KT6 4DJ

30c is a two-bedroom detached house in Surbiton (KT6 4DJ). It has a recorded floor area of 71 m² (around 764 sq ft), construction records dating it to 1900-1929 and council tax band D. The latest certificate (February 2020) shows a D (score 66), on the cusp of jumping into the C band. Earlier certificates rated it C (August 2009); the latest reading is one band lower. Between certificates, window efficiency went from Very Poor to Average and lighting went from Very Poor to Very Good; while wall efficiency dropped from Average to Very Poor and hot-water efficiency dropped from Very Good to Good. The recommended improvements would push it to C (score 78). At 71 m² this is the 19th smallest of 36 units on EPC record in the building, where floor areas span 28–117 m². The building's EPC ratings span E to C across 36 units on file. Other recorded features include a self-contained annexe.

2 planning records sit against the property, 2 approved, 0 refused. Past consents include tree works, meaningful when judging how the property has evolved. Across 2002–2017, sale prices on this property compounded at 7.2% per year. On a £-per-square-foot basis, the last sale (£663/sq ft) was about 96.4% above the typical sold price in the postcode. 8 years since the last transfer (December 2017).