Flat 1, 15 Effingham Road, Long Ditton, Surbiton, KT6 5JZ

Flat 1 is a one-bedroom semi-detached house in Long Ditton, Surbiton, Surbiton (KT6 5JZ). It has a recorded floor area of 47 m² (around 506 sq ft), construction records dating it to 1930-1949 and council tax band B. At 47 m² this is the 3rd smallest of 4 units on EPC record in the building, where floor areas span 31–62 m². The building's EPC ratings span E to C, with this unit at the top. On EPC score it ranks first in the building (75 versus a worst of 54). The latest certificate (November 2021) shows a C (score 75), near the top of the C band. The rating has held steady at C across 2 certificates since November 2021. Between certificates, wall efficiency went from Very Poor to Good.

Untraded for 15 years, with the last transfer in December 2010. Across 2004–2010, sale prices on this property compounded at 2.1% per year. Today's modelled estimate of £343,000 sits 99.4% above the 2010 sale of £172,000. At 47 m² it sits well below the postcode median (73 m² across 30 EPCs), making it one of the more compact homes locally. Its energy rating outperforms most of the postcode (better than 80% of similar EPCs). 3 planning records sit against the property, 1 approved, 2 refused. Past consents include an extension, meaningful when judging how the property has evolved.