31c, Cadogan Road, Surbiton, KT6 4DJ

31c is a one-bedroom semi-detached house in Surbiton (KT6 4DJ). It has a recorded floor area of 65 m² (around 700 sq ft), construction records dating it to 1900-1929 and council tax band C. The latest certificate (June 2019) shows an E (score 43), well below the UK norm with real room to improve. When first surveyed in June 2009 the rating was F, the property has climbed 1 band since. Between certificates, main heating went from Average to Good; while roof efficiency dropped from Poor to Very Poor and lighting dropped from Average to Poor. The recommended improvements would lift it to C (score 70), a 2-band jump.

Untraded for 16 years, with the last transfer in December 2009. That sale fell during the post-crash dip, which often skews comparisons against later neighbouring sales. On energy efficiency it sits in the bottom 10% of properties in this postcode — significant headroom for improvement. Across 2006–2009, sale prices on this property compounded at 5.7% per year. Today's modelled estimate of £382,000 sits 57.9% above the 2009 sale of £242,000. 2 planning records sit against the property, 2 approved, 0 refused. Past consents include new windows, meaningful when judging how the property has evolved.