3a Hillborough Mansions, Hillborough Road, Westcliff On Sea, SS0 0RZ

3a Hillborough Mansions is a one-bedroom mid-terrace house in Westcliff On Sea (SS0 0RZ). It has a recorded floor area of 42 m² (around 450 sq ft), construction records dating it to 1930-1949 and council tax band A. At 42 m² this is the 6th smallest of 16 units on EPC record in the building, where floor areas span 34–52 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 (48 versus a best of 78). The latest certificate (June 2010) shows an E (score 48), well below the UK norm with real room to improve. Main heating runs on electricity. The latest certificate is from June 2010, so improvements made since then won't be reflected.

On energy efficiency it sits in the bottom 10% of properties in this postcode — significant headroom for improvement. 1 bedrooms is on the smaller side for this postcode, where 3 is the typical count. Across 1996–2013, sale prices on this property compounded at 9.3% per year. Today's modelled estimate of £147,000 sits 86.7% above the 2013 sale of £78,750. On a £-per-square-foot basis, the last sale (£175/sq ft) was about 16.3% below the postcode norm. Last sold in April 2013, so it's been off the market for around 13 years. Across the public record there are 4 sales, relatively high churn for a single property.