Flat 3, 138 Carlton Avenue, Westcliff On Sea, SS0 0QQ

Flat 3 is a semi-detached house in Westcliff On Sea (SS0 0QQ). It has a recorded floor area of 36 m² (around 388 sq ft) and construction records dating it to 1900-1929. At 36 m² this is the smallest unit on EPC record across the building (36–55 m²). The building's EPC ratings span D to C, with this unit at the top. The latest certificate (December 2022) shows a C (score 72). The rating has held steady at C across 4 certificates since June 2009. Between certificates, wall efficiency went from Very Poor to Poor, roof efficiency went from Average to Good and lighting went from Very Poor to Very Good.

It hasn't traded since June 2007, a hold of 19 years that's notably long for the area. Across the public record there are 4 sales, relatively high churn for a single property. That sale landed at the peak of the pre-credit-crunch market, which is a useful reference point when interpreting the price. At 36 m² it sits well below the postcode median (74 m² across 45 EPCs), making it one of the more compact homes locally. Across 1998–2007, sale prices on this property compounded at 16.6% per year. Today's modelled estimate of £148,000 is 46.2% above the 2007 sale price.