Brine Court, 17, Grove Road, Surbiton, KT6 4BU

Brine Court is a two-bedroom semi-detached house in Surbiton (KT6 4BU). It has a recorded floor area of 73 m² (around 786 sq ft), construction records dating it to 1950-1966 and council tax band C. The latest certificate (June 2018) shows an E (score 44), well below the UK norm with real room to improve. When first surveyed in October 2008 the rating was G, the property has climbed 2 bands since. Between certificates, hot-water efficiency went from Very Poor to Poor and lighting went from Poor to Very Good. The recommended improvements would lift it to C (score 78), a 2-band jump. Main heating runs on electricity. At 73 m² this is the 7th smallest of 8 units on EPC record in Brine Court, where floor areas span 48–76 m². The building's EPC ratings span E to C, with this unit at the bottom. On EPC score it ranks last in the building (44 versus a best of 73).

It hasn't traded since December 2008, a hold of 18 years that's notably long for the area. That sale landed at the peak of the pre-credit-crunch market, which is a useful reference point when interpreting the price. At 73 m² it's 23.7% larger than the typical home in the postcode (59 m² median across 7 EPCs). On energy efficiency it sits in the bottom 10% of properties in this postcode — significant headroom for improvement. Today's modelled estimate of £345,000 sits 76.9% above the 2008 sale of £195,000.