11 The Colonnade, Marina, St Leonards On Sea, TN38 0BG

11 The Colonnade is a mid-terrace house in St Leonards On Sea (TN38 0BG). It has a recorded floor area of 45 m² (around 484 sq ft) and construction records dating it to 1900-1929. The latest certificate (May 2019) shows an E (score 54), well below the UK norm with real room to improve. The rating has held steady at E across 2 certificates since May 2009. Between certificates, wall efficiency went from Very Poor to Poor, window efficiency went from Very Poor to Average and hot-water efficiency went from Poor to Average. The recommended improvements would lift it to C (score 72), a 2-band jump. Main heating runs on electricity. At 45 m² this is the 10th smallest of 22 units on EPC record in the building, where floor areas span 30–84 m². The building's EPC ratings span F to B across 22 units on file.

It lags the bulk of the postcode on energy efficiency (less efficient than 76% of similar EPCs). Across 2004–2021, sale prices on this property compounded at 2.4% per year. Today's modelled estimate of £146,000 is 27% above the 2021 sale price. On a £-per-square-foot basis, the last sale (£237/sq ft) was about 26.1% above the typical sold price in the postcode. Sold August 2021 for £115,000. That sale was during the post-pandemic price surge, when transactions cleared materially above pre-2020 trend.