11a, Carisbrooke Road, Westcliff On Sea, SS0 7DU

11a is a one-bedroom end-of-terrace house in Westcliff On Sea (SS0 7DU). It has a recorded floor area of 49 m² (around 527 sq ft), construction records dating it to 1930-1949 and council tax band A. The latest certificate (July 2025) shows a D (score 67), on the cusp of jumping into the C band. When first surveyed in October 2013 the rating was E, the property has climbed 1 band since. Between certificates, roof efficiency went from Poor to Average and hot-water efficiency went from Average to Good; while lighting dropped from Very Good to Average. The recommended improvements would push it to C (score 77). At 49 m² this is the 4th smallest of 20 units on EPC record in the building, where floor areas span 42–137 m². The building's EPC ratings span E to A across 20 units on file.

Held since November 1999 — that's 27 years off the open market, well above the local norm. Across 1996–1999, sale prices on this property compounded at 147.8% per year. Today's modelled estimate of £145,000 sits 353.1% above the 1999 sale of £32,000. On a £-per-square-foot basis, the last sale (£61/sq ft) was about 58.8% below the postcode norm. At 49 m² it sits well below the postcode median (102 m² across 19 EPCs), making it one of the more compact homes locally.