4a Hillborough Mansions, Hillborough Road, Westcliff On Sea, SS0 0RZ

4a Hillborough Mansions is a one-bedroom mid-terrace house in Westcliff On Sea (SS0 0RZ). It has a recorded floor area of 38 m² (around 409 sq ft), construction records dating it to 1950-1966 and council tax band A. At 38 m² this is the 3rd 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 top. Other recorded features include a balcony. The latest certificate (October 2025) shows a C (score 74). When first surveyed in July 2015 the rating was D, the property has climbed 1 band since. Between certificates, window efficiency went from Poor to Average, hot-water efficiency went from Poor to Good and lighting went from Poor to Good; while wall efficiency dropped from Poor to Very Poor.

Across 2004–2021, sale prices on this property compounded at 1.9% per year. Today's modelled estimate of £145,000 is 17.9% above the 2021 sale price. On a £-per-square-foot basis, the last sale (£301/sq ft) was about 54.6% above the typical sold price in the postcode. At 38 m² it's 15.6% smaller than the typical home in the postcode (45 m² median across 15 EPCs). 1 bedrooms is on the smaller side for this postcode, where 3 is the typical count. Most recent transfer: March 2021 at £123,000. That sale was during the post-pandemic price surge, when transactions cleared materially above pre-2020 trend.