11a, Britannia Road, Westcliff On Sea, SS0 8BS

11a is a semi-detached house in Westcliff On Sea (SS0 8BS). It has a recorded floor area of 95 m² (around 1023 sq ft) and construction records dating it to 1900-1929. The latest certificate (March 2021) shows a D (score 68), on the cusp of jumping into the C band. When first surveyed in August 2010 the rating was E, the property has climbed 1 band since. Between certificates, roof efficiency went from Poor to Average, window efficiency went from Very Poor to Average and hot-water efficiency went from Average to Good. The recommended improvements would push it to C (score 78). At 95 m² this is the 39th smallest of 45 units on EPC record in the building, where floor areas span 32–229 m². The building's EPC ratings span E to C across 45 units on file.

Across 2015–2025, sale prices on this property compounded at -0.9% per year. Today's modelled estimate of £218,000 is 11% below the 2025 sale of £245,000, below the original sale price, which typically signals condition or completion-status changes worth verifying. On a £-per-square-foot basis, the last sale (£240/sq ft) was about 36.7% above the typical sold price in the postcode. At 95 m² the property is well over the postcode median (55 m² across 44 EPCs), placing it in the larger end of the local stock. A recent sale: £245,000 in May 2025.